diff --git a/src/main/java/com/atsuishio/superbwarfare/client/ClickHandler.java b/src/main/java/com/atsuishio/superbwarfare/client/ClickHandler.java
index b5d26e18d..2522c647a 100644
--- a/src/main/java/com/atsuishio/superbwarfare/client/ClickHandler.java
+++ b/src/main/java/com/atsuishio/superbwarfare/client/ClickHandler.java
@@ -318,7 +318,7 @@ public class ClickHandler {
                 player.playSound(ModSounds.TRIGGER_CLICK.get(), 1, 1);
             }
 
-            if (!stack.is(ModTags.Items.CANNOT_RELOAD) && stack.getOrCreateTag().getInt("ammo") <= 0) {
+            if (!stack.is(ModTags.Items.CANNOT_RELOAD) && GunsTool.getGunIntTag(stack, "Ammo", 0) <= 0) {
                 if (ReloadConfig.LEFT_CLICK_RELOAD.get()) {
                     ModUtils.PACKET_HANDLER.sendToServer(new ReloadMessage(0));
                 }
diff --git a/src/main/java/com/atsuishio/superbwarfare/client/model/item/K98ItemModel.java b/src/main/java/com/atsuishio/superbwarfare/client/model/item/K98ItemModel.java
index 97b8c8610..32750c25e 100644
--- a/src/main/java/com/atsuishio/superbwarfare/client/model/item/K98ItemModel.java
+++ b/src/main/java/com/atsuishio/superbwarfare/client/model/item/K98ItemModel.java
@@ -43,7 +43,7 @@ public class K98ItemModel extends GeoModel<K98Item> {
         if (!stack.is(ModTags.Items.GUN)) return;
 
 
-        if (stack.getOrCreateTag().getDouble("prepare") > 11 && stack.getOrCreateTag().getInt("ammo") == 1) {
+        if (stack.getOrCreateTag().getDouble("prepare") > 11 && GunsTool.getGunIntTag(stack, "Ammo", 0) == 1) {
             clip.setScaleX(0);
             clip.setScaleY(0);
             clip.setScaleZ(0);
diff --git a/src/main/java/com/atsuishio/superbwarfare/client/model/item/M60ItemModel.java b/src/main/java/com/atsuishio/superbwarfare/client/model/item/M60ItemModel.java
index 15e2c42e8..1e856ac2b 100644
--- a/src/main/java/com/atsuishio/superbwarfare/client/model/item/M60ItemModel.java
+++ b/src/main/java/com/atsuishio/superbwarfare/client/model/item/M60ItemModel.java
@@ -1,12 +1,12 @@
 package com.atsuishio.superbwarfare.client.model.item;
 
 import com.atsuishio.superbwarfare.ModUtils;
-import com.atsuishio.superbwarfare.event.PlayerEventHandler;
-import com.atsuishio.superbwarfare.tools.GunsTool;
 import com.atsuishio.superbwarfare.client.AnimationHelper;
 import com.atsuishio.superbwarfare.event.ClientEventHandler;
+import com.atsuishio.superbwarfare.event.PlayerEventHandler;
 import com.atsuishio.superbwarfare.init.ModTags;
 import com.atsuishio.superbwarfare.item.gun.machinegun.M60Item;
+import com.atsuishio.superbwarfare.tools.GunsTool;
 import net.minecraft.client.Minecraft;
 import net.minecraft.resources.ResourceLocation;
 import net.minecraft.util.Mth;
@@ -56,31 +56,33 @@ public class M60ItemModel extends GeoModel<M60Item> {
             r.setRotX(1.5f);
         }
 
-        if (stack.getOrCreateTag().getInt("ammo") < 5 && stack.getOrCreateTag().getBoolean("HideBulletChain")) {
+        int ammo = GunsTool.getGunIntTag(stack, "Ammo", 0);
+
+        if (ammo < 5 && stack.getOrCreateTag().getBoolean("HideBulletChain")) {
             b5.setScaleX(0);
             b5.setScaleY(0);
             b5.setScaleZ(0);
         }
 
-        if (stack.getOrCreateTag().getInt("ammo") < 4 && stack.getOrCreateTag().getBoolean("HideBulletChain")) {
+        if (ammo < 4 && stack.getOrCreateTag().getBoolean("HideBulletChain")) {
             b4.setScaleX(0);
             b4.setScaleY(0);
             b4.setScaleZ(0);
         }
 
-        if (stack.getOrCreateTag().getInt("ammo") < 3 && stack.getOrCreateTag().getBoolean("HideBulletChain")) {
+        if (ammo < 3 && stack.getOrCreateTag().getBoolean("HideBulletChain")) {
             b3.setScaleX(0);
             b3.setScaleY(0);
             b3.setScaleZ(0);
         }
 
-        if (stack.getOrCreateTag().getInt("ammo") < 2 && stack.getOrCreateTag().getBoolean("HideBulletChain")) {
+        if (ammo < 2 && stack.getOrCreateTag().getBoolean("HideBulletChain")) {
             b2.setScaleX(0);
             b2.setScaleY(0);
             b2.setScaleZ(0);
         }
 
-        if (stack.getOrCreateTag().getInt("ammo") < 1 && stack.getOrCreateTag().getBoolean("HideBulletChain")) {
+        if (ammo < 1 && stack.getOrCreateTag().getBoolean("HideBulletChain")) {
             b1.setScaleX(0);
             b1.setScaleY(0);
             b1.setScaleZ(0);
diff --git a/src/main/java/com/atsuishio/superbwarfare/client/model/item/SentinelItemModel.java b/src/main/java/com/atsuishio/superbwarfare/client/model/item/SentinelItemModel.java
index 018e4f61e..1cedf3f30 100644
--- a/src/main/java/com/atsuishio/superbwarfare/client/model/item/SentinelItemModel.java
+++ b/src/main/java/com/atsuishio/superbwarfare/client/model/item/SentinelItemModel.java
@@ -100,8 +100,8 @@ public class SentinelItemModel extends GeoModel<SentinelItem> {
         root.setRotY((float) (0.2f * movePosX + Mth.DEG_TO_RAD * 300 * ClientEventHandler.drawTime + Mth.DEG_TO_RAD * turnRotY));
         root.setRotZ((float) (0.2f * movePosX + moveRotZ + Mth.DEG_TO_RAD * 90 * ClientEventHandler.drawTime + 2.7f * mph + Mth.DEG_TO_RAD * turnRotZ));
 
-        if ((stack.getOrCreateTag().getDouble("ammo") <= 5)) {
-            ammo.setScaleX((float) (stack.getOrCreateTag().getDouble("ammo") / 5));
+        if (GunsTool.getGunIntTag(stack, "Ammo", 0) <= 5) {
+            ammo.setScaleX((float) GunsTool.getGunIntTag(stack, "Ammo", 0) / 5);
         }
 
         CoreGeoBone camera = getAnimationProcessor().getBone("camera");
diff --git a/src/main/java/com/atsuishio/superbwarfare/client/screens/AmmoBarOverlay.java b/src/main/java/com/atsuishio/superbwarfare/client/screens/AmmoBarOverlay.java
index 131cb35dd..3d15505e5 100644
--- a/src/main/java/com/atsuishio/superbwarfare/client/screens/AmmoBarOverlay.java
+++ b/src/main/java/com/atsuishio/superbwarfare/client/screens/AmmoBarOverlay.java
@@ -228,7 +228,7 @@ public class AmmoBarOverlay {
             return stack.getOrCreateTag().getInt("max_ammo");
         }
 
-        return stack.getOrCreateTag().getInt("ammo");
+        return GunsTool.getGunIntTag(stack, "Ammo", 0);
     }
 
     private static String getPlayerAmmoCount(Player player) {
diff --git a/src/main/java/com/atsuishio/superbwarfare/client/screens/JavelinHudOverlay.java b/src/main/java/com/atsuishio/superbwarfare/client/screens/JavelinHudOverlay.java
index 27ca43788..216ce43d1 100644
--- a/src/main/java/com/atsuishio/superbwarfare/client/screens/JavelinHudOverlay.java
+++ b/src/main/java/com/atsuishio/superbwarfare/client/screens/JavelinHudOverlay.java
@@ -6,6 +6,7 @@ import com.atsuishio.superbwarfare.event.ClientEventHandler;
 import com.atsuishio.superbwarfare.init.ModItems;
 import com.atsuishio.superbwarfare.network.ModVariables;
 import com.atsuishio.superbwarfare.tools.EntityFindUtil;
+import com.atsuishio.superbwarfare.tools.GunsTool;
 import com.atsuishio.superbwarfare.tools.HudUtil;
 import com.atsuishio.superbwarfare.tools.SeekTool;
 import com.mojang.blaze3d.platform.GlStateManager;
@@ -76,7 +77,7 @@ public class JavelinHudOverlay {
                 float j1 = l + j;
                 preciseBlit(event.getGuiGraphics(), ModUtils.loc("textures/screens/javelin/javelin_hud.png"), k, l, 0, 0.0F, i, j, i, j);
                 preciseBlit(event.getGuiGraphics(), ModUtils.loc(stack.getOrCreateTag().getBoolean("TopMode") ? "textures/screens/javelin/top.png" : "textures/screens/javelin/dir.png"), k, l, 0, 0.0F, i, j, i, j);
-                preciseBlit(event.getGuiGraphics(), ModUtils.loc(stack.getOrCreateTag().getInt("ammo") > 0 ? "textures/screens/javelin/missile_green.png" : "textures/screens/javelin/missile_red.png"), k, l, 0, 0.0F, i, j, i, j);
+                preciseBlit(event.getGuiGraphics(), ModUtils.loc(GunsTool.getGunIntTag(stack, "Ammo", 0) > 0 ? "textures/screens/javelin/missile_green.png" : "textures/screens/javelin/missile_red.png"), k, l, 0, 0.0F, i, j, i, j);
                 if (stack.getOrCreateTag().getInt("SeekTime") > 1 && stack.getOrCreateTag().getInt("SeekTime") < 20) {
                     preciseBlit(event.getGuiGraphics(), ModUtils.loc("textures/screens/javelin/seek.png"), k, l, 0, 0.0F, i, j, i, j);
                 }
diff --git a/src/main/java/com/atsuishio/superbwarfare/entity/DroneEntity.java b/src/main/java/com/atsuishio/superbwarfare/entity/DroneEntity.java
index b8e119f4b..d915eb178 100644
--- a/src/main/java/com/atsuishio/superbwarfare/entity/DroneEntity.java
+++ b/src/main/java/com/atsuishio/superbwarfare/entity/DroneEntity.java
@@ -135,7 +135,7 @@ public class DroneEntity extends LivingEntity implements GeoEntity {
 
         compound.putBoolean("Linked", this.entityData.get(LINKED));
         compound.putString("Controller", this.entityData.get(CONTROLLER));
-        compound.putInt("ammo", this.entityData.get(AMMO));
+        compound.putInt("Ammo", this.entityData.get(AMMO));
         compound.putBoolean("Kamikaze", this.entityData.get(KAMIKAZE));
     }
 
@@ -147,8 +147,8 @@ public class DroneEntity extends LivingEntity implements GeoEntity {
             this.entityData.set(LINKED, compound.getBoolean("Linked"));
         if (compound.contains("Controller"))
             this.entityData.set(CONTROLLER, compound.getString("Controller"));
-        if (compound.contains("ammo"))
-            this.entityData.set(AMMO, compound.getInt("ammo"));
+        if (compound.contains("Ammo"))
+            this.entityData.set(AMMO, compound.getInt("Ammo"));
         if (compound.contains("Kamikaze"))
             this.entityData.set(KAMIKAZE, compound.getBoolean("Kamikaze"));
     }
@@ -170,7 +170,6 @@ public class DroneEntity extends LivingEntity implements GeoEntity {
     }
 
 
-
     @Override
     public void baseTick() {
         super.baseTick();
@@ -187,7 +186,7 @@ public class DroneEntity extends LivingEntity implements GeoEntity {
             if (this.getPersistentData().getBoolean("forward")) {
                 moveZ = Mth.clamp(moveZ + 0.3f, 0, 3);
             } else if (this.getPersistentData().getBoolean("backward")) {
-                moveZ= Mth.clamp(moveZ - 0.3f, -3, 0);
+                moveZ = Mth.clamp(moveZ - 0.3f, -3, 0);
             }
 
             moveX *= 0.25;
diff --git a/src/main/java/com/atsuishio/superbwarfare/event/ClientEventHandler.java b/src/main/java/com/atsuishio/superbwarfare/event/ClientEventHandler.java
index 1e2da05de..dd892f0f6 100644
--- a/src/main/java/com/atsuishio/superbwarfare/event/ClientEventHandler.java
+++ b/src/main/java/com/atsuishio/superbwarfare/event/ClientEventHandler.java
@@ -297,7 +297,7 @@ public class ClientEventHandler {
                 && (!(stack.getOrCreateTag().getBoolean("is_normal_reloading") || stack.getOrCreateTag().getBoolean("is_empty_reloading"))
                 && !stack.getOrCreateTag().getBoolean("reloading")
                 && !stack.getOrCreateTag().getBoolean("charging")
-                && stack.getOrCreateTag().getInt("ammo") > 0
+                && GunsTool.getGunIntTag(stack, "Ammo", 0) > 0
                 && !player.getCooldowns().isOnCooldown(stack.getItem())
                 && !GunsTool.getGunBooleanTag(stack, "NeedBoltAction", false)
                 && revolverPre()
@@ -377,14 +377,14 @@ public class ClientEventHandler {
     public static void shootClient(Player player) {
         ItemStack stack = player.getMainHandItem();
         if (stack.is(ModTags.Items.NORMAL_GUN)) {
-            if (stack.getOrCreateTag().getInt("ammo") > 0) {
+            if (GunsTool.getGunIntTag(stack, "Ammo", 0) > 0) {
                 int mode = GunsTool.getGunIntTag(stack, "FireMode");
                 if (mode != 2) {
                     holdFire = false;
                 }
 
                 if (mode == 1) {
-                    if (stack.getOrCreateTag().getInt("ammo") == 1) {
+                    if (GunsTool.getGunIntTag(stack, "Ammo", 0) == 1) {
                         burstFireSize = 1;
                     }
                     if (burstFireSize == 1) {
diff --git a/src/main/java/com/atsuishio/superbwarfare/event/LivingEventHandler.java b/src/main/java/com/atsuishio/superbwarfare/event/LivingEventHandler.java
index c9f6ec0de..2e64d18d2 100644
--- a/src/main/java/com/atsuishio/superbwarfare/event/LivingEventHandler.java
+++ b/src/main/java/com/atsuishio/superbwarfare/event/LivingEventHandler.java
@@ -616,18 +616,18 @@ public class LivingEventHandler {
 
         player.getCapability(ModVariables.PLAYER_VARIABLES_CAPABILITY, null).ifPresent(capability -> {
                     int mag = GunsTool.getGunIntTag(stack, "Magazine", 0) + stack.getOrCreateTag().getInt("customMag");
-                    int ammo = stack.getOrCreateTag().getInt("ammo");
+                    int ammo = GunsTool.getGunIntTag(stack, "Ammo", 0);
                     int ammoReload = (int) Math.min(mag, mag * rate);
                     int ammoNeed = Math.min(mag - ammo, ammoReload);
 
                     if (stack.is(ModTags.Items.USE_RIFLE_AMMO)) {
                         int ammoFinal = Math.min(capability.rifleAmmo, ammoNeed);
                         capability.rifleAmmo -= ammoFinal;
-                        stack.getOrCreateTag().putInt("ammo", Math.min(mag, ammo + ammoFinal));
+                        GunsTool.setGunIntTag(stack, "Ammo", Math.min(mag, ammo + ammoFinal));
                     } else if (stack.is(ModTags.Items.USE_HANDGUN_AMMO)) {
                         int ammoFinal = Math.min(capability.handgunAmmo, ammoNeed);
                         capability.handgunAmmo -= ammoFinal;
-                        stack.getOrCreateTag().putInt("ammo", Math.min(mag, ammo + ammoFinal));
+                        GunsTool.setGunIntTag(stack, "Ammo", Math.min(mag, ammo + ammoFinal));
                     }
                     capability.syncPlayerVariables(player);
                 }
diff --git a/src/main/java/com/atsuishio/superbwarfare/event/PlayerEventHandler.java b/src/main/java/com/atsuishio/superbwarfare/event/PlayerEventHandler.java
index acfe37570..3234f26b0 100644
--- a/src/main/java/com/atsuishio/superbwarfare/event/PlayerEventHandler.java
+++ b/src/main/java/com/atsuishio/superbwarfare/event/PlayerEventHandler.java
@@ -235,10 +235,7 @@ public class PlayerEventHandler {
     private static void handleSpecialWeaponAmmo(Player player) {
         ItemStack stack = player.getMainHandItem();
 
-        if (stack.getItem() == ModItems.RPG.get() && stack.getOrCreateTag().getInt("ammo") == 1) {
-            stack.getOrCreateTag().putDouble("empty", 0);
-        }
-        if (stack.getItem() == ModItems.BOCEK.get() && stack.getOrCreateTag().getInt("ammo") == 1) {
+        if ((stack.is(ModItems.RPG.get()) || stack.is(ModItems.BOCEK.get())) && GunsTool.getGunIntTag(stack, "Ammo", 0) == 1) {
             stack.getOrCreateTag().putDouble("empty", 0);
         }
     }
diff --git a/src/main/java/com/atsuishio/superbwarfare/item/gun/GunItem.java b/src/main/java/com/atsuishio/superbwarfare/item/gun/GunItem.java
index 303d48cab..4c37a9d48 100644
--- a/src/main/java/com/atsuishio/superbwarfare/item/gun/GunItem.java
+++ b/src/main/java/com/atsuishio/superbwarfare/item/gun/GunItem.java
@@ -68,10 +68,10 @@ public abstract class GunItem extends Item {
             handleGunPerks(stack);
             handleGunAttachment(stack);
 
-            if ((stack.is(ModTags.Items.EXTRA_ONE_AMMO) && stack.getOrCreateTag().getInt("ammo") > GunsTool.getGunIntTag(stack, "Magazine", 0) + stack.getOrCreateTag().getInt("customMag") + 1)
-                    || (!stack.is(ModTags.Items.EXTRA_ONE_AMMO) && stack.getOrCreateTag().getInt("ammo") > GunsTool.getGunIntTag(stack, "Magazine", 0) + stack.getOrCreateTag().getInt("customMag"))
+            if ((stack.is(ModTags.Items.EXTRA_ONE_AMMO) && GunsTool.getGunIntTag(stack, "Ammo", 0) > GunsTool.getGunIntTag(stack, "Magazine", 0) + stack.getOrCreateTag().getInt("customMag") + 1)
+                    || (!stack.is(ModTags.Items.EXTRA_ONE_AMMO) && GunsTool.getGunIntTag(stack, "Ammo", 0) > GunsTool.getGunIntTag(stack, "Magazine", 0) + stack.getOrCreateTag().getInt("customMag"))
             ) {
-                int count = stack.getOrCreateTag().getInt("ammo") - GunsTool.getGunIntTag(stack, "Magazine", 0) + stack.getOrCreateTag().getInt("customMag") - (stack.is(ModTags.Items.EXTRA_ONE_AMMO) ? 1 : 0);
+                int count = GunsTool.getGunIntTag(stack, "Ammo", 0) - GunsTool.getGunIntTag(stack, "Magazine", 0) + stack.getOrCreateTag().getInt("customMag") - (stack.is(ModTags.Items.EXTRA_ONE_AMMO) ? 1 : 0);
                 entity.getCapability(ModVariables.PLAYER_VARIABLES_CAPABILITY, null).ifPresent(capability -> {
 
                     if (stack.is(ModTags.Items.USE_SHOTGUN_AMMO)) {
@@ -86,7 +86,7 @@ public abstract class GunItem extends Item {
                     capability.syncPlayerVariables(entity);
                 });
 
-                stack.getOrCreateTag().putInt("ammo", GunsTool.getGunIntTag(stack, "Magazine", 0) + stack.getOrCreateTag().getInt("customMag") + (stack.is(ModTags.Items.EXTRA_ONE_AMMO) ? 1 : 0));
+                GunsTool.setGunIntTag(stack, "Ammo", GunsTool.getGunIntTag(stack, "Magazine", 0) + stack.getOrCreateTag().getInt("customMag") + (stack.is(ModTags.Items.EXTRA_ONE_AMMO) ? 1 : 0));
             }
         }
     }
@@ -166,7 +166,7 @@ public abstract class GunItem extends Item {
                 GunsTool.setPerkIntTag(stack, "FourthTimesCharmCount", 0);
 
                 int mag = GunsTool.getGunIntTag(stack, "Magazine", 0) + stack.getOrCreateTag().getInt("customMag");
-                stack.getOrCreateTag().putInt("ammo", Math.min(mag, stack.getOrCreateTag().getInt("ammo") + 2));
+                GunsTool.setGunIntTag(stack, "Ammo", Math.min(mag, GunsTool.getGunIntTag(stack, "Ammo", 0) + 2));
             }
         }
     }
diff --git a/src/main/java/com/atsuishio/superbwarfare/item/gun/launcher/RpgItem.java b/src/main/java/com/atsuishio/superbwarfare/item/gun/launcher/RpgItem.java
index 21a3fa6e0..06c46456f 100644
--- a/src/main/java/com/atsuishio/superbwarfare/item/gun/launcher/RpgItem.java
+++ b/src/main/java/com/atsuishio/superbwarfare/item/gun/launcher/RpgItem.java
@@ -46,7 +46,7 @@ import java.util.Set;
 import java.util.function.Consumer;
 
 public class RpgItem extends GunItem implements GeoItem, AnimatedItem {
-    
+
     private final AnimatableInstanceCache cache = GeckoLibUtil.createInstanceCache(this);
     public static ItemDisplayContext transformType;
 
@@ -81,7 +81,7 @@ public class RpgItem extends GunItem implements GeoItem, AnimatedItem {
         if (player == null) return PlayState.STOP;
         ItemStack stack = player.getMainHandItem();
         if (!stack.is(ModTags.Items.GUN)) return PlayState.STOP;
-        
+
         if (stack.getOrCreateTag().getBoolean("is_empty_reloading")) {
             return event.setAndContinue(RawAnimation.begin().thenPlay("animation.rpg.reload"));
         }
@@ -139,7 +139,7 @@ public class RpgItem extends GunItem implements GeoItem, AnimatedItem {
         if (itemStack.getOrCreateTag().getBoolean("draw")) {
             itemStack.getOrCreateTag().putBoolean("draw", false);
 
-            if (itemStack.getOrCreateTag().getInt("ammo") == 0) {
+            if (GunsTool.getGunIntTag(itemStack, "Ammo", 0) == 0) {
                 itemStack.getOrCreateTag().putDouble("empty", 1);
             }
         }
diff --git a/src/main/java/com/atsuishio/superbwarfare/item/gun/machinegun/M60Item.java b/src/main/java/com/atsuishio/superbwarfare/item/gun/machinegun/M60Item.java
index 8b94b664f..f64932489 100644
--- a/src/main/java/com/atsuishio/superbwarfare/item/gun/machinegun/M60Item.java
+++ b/src/main/java/com/atsuishio/superbwarfare/item/gun/machinegun/M60Item.java
@@ -1,18 +1,18 @@
 package com.atsuishio.superbwarfare.item.gun.machinegun;
 
 import com.atsuishio.superbwarfare.ModUtils;
+import com.atsuishio.superbwarfare.client.PoseTool;
 import com.atsuishio.superbwarfare.client.renderer.item.M60ItemRenderer;
 import com.atsuishio.superbwarfare.event.ClientEventHandler;
-import com.atsuishio.superbwarfare.item.gun.GunItem;
-import com.atsuishio.superbwarfare.perk.Perk;
-import com.atsuishio.superbwarfare.perk.PerkHelper;
-import com.atsuishio.superbwarfare.tools.GunsTool;
-import com.atsuishio.superbwarfare.client.PoseTool;
 import com.atsuishio.superbwarfare.init.ModItems;
 import com.atsuishio.superbwarfare.init.ModPerks;
 import com.atsuishio.superbwarfare.init.ModSounds;
 import com.atsuishio.superbwarfare.init.ModTags;
 import com.atsuishio.superbwarfare.item.AnimatedItem;
+import com.atsuishio.superbwarfare.item.gun.GunItem;
+import com.atsuishio.superbwarfare.perk.Perk;
+import com.atsuishio.superbwarfare.perk.PerkHelper;
+import com.atsuishio.superbwarfare.tools.GunsTool;
 import net.minecraft.client.Minecraft;
 import net.minecraft.client.model.HumanoidModel;
 import net.minecraft.client.player.LocalPlayer;
@@ -138,7 +138,7 @@ public class M60Item extends GunItem implements GeoItem, AnimatedItem {
         if (itemstack.getOrCreateTag().getBoolean("draw")) {
             itemstack.getOrCreateTag().putBoolean("draw", false);
 
-            if (itemstack.getOrCreateTag().getInt("ammo") <= 5) {
+            if (GunsTool.getGunIntTag(itemstack, "Ammo", 0) <= 5) {
                 itemstack.getOrCreateTag().putBoolean("HideBulletChain", true);
             }
         }
diff --git a/src/main/java/com/atsuishio/superbwarfare/item/gun/rifle/SksItem.java b/src/main/java/com/atsuishio/superbwarfare/item/gun/rifle/SksItem.java
index 1218b4407..702e75fd3 100644
--- a/src/main/java/com/atsuishio/superbwarfare/item/gun/rifle/SksItem.java
+++ b/src/main/java/com/atsuishio/superbwarfare/item/gun/rifle/SksItem.java
@@ -1,17 +1,17 @@
 package com.atsuishio.superbwarfare.item.gun.rifle;
 
 import com.atsuishio.superbwarfare.ModUtils;
+import com.atsuishio.superbwarfare.client.PoseTool;
 import com.atsuishio.superbwarfare.client.renderer.item.SksItemRenderer;
 import com.atsuishio.superbwarfare.event.ClientEventHandler;
-import com.atsuishio.superbwarfare.perk.Perk;
-import com.atsuishio.superbwarfare.perk.PerkHelper;
-import com.atsuishio.superbwarfare.tools.GunsTool;
-import com.atsuishio.superbwarfare.client.PoseTool;
 import com.atsuishio.superbwarfare.init.ModItems;
 import com.atsuishio.superbwarfare.init.ModSounds;
 import com.atsuishio.superbwarfare.init.ModTags;
 import com.atsuishio.superbwarfare.item.AnimatedItem;
 import com.atsuishio.superbwarfare.item.gun.GunItem;
+import com.atsuishio.superbwarfare.perk.Perk;
+import com.atsuishio.superbwarfare.perk.PerkHelper;
+import com.atsuishio.superbwarfare.tools.GunsTool;
 import net.minecraft.client.Minecraft;
 import net.minecraft.client.model.HumanoidModel;
 import net.minecraft.client.player.LocalPlayer;
@@ -123,7 +123,7 @@ public class SksItem extends GunItem implements GeoItem, AnimatedItem {
         if (itemstack.getOrCreateTag().getBoolean("draw")) {
             itemstack.getOrCreateTag().putBoolean("draw", false);
 
-            if (itemstack.getOrCreateTag().getInt("ammo") == 0) {
+            if (GunsTool.getGunIntTag(itemstack, "Ammo", 0) == 0) {
                 itemstack.getOrCreateTag().putBoolean("HoldOpen", true);
             }
         }
diff --git a/src/main/java/com/atsuishio/superbwarfare/item/gun/sniper/MosinNagantItem.java b/src/main/java/com/atsuishio/superbwarfare/item/gun/sniper/MosinNagantItem.java
index 3076bbd5c..d6fb4e7f3 100644
--- a/src/main/java/com/atsuishio/superbwarfare/item/gun/sniper/MosinNagantItem.java
+++ b/src/main/java/com/atsuishio/superbwarfare/item/gun/sniper/MosinNagantItem.java
@@ -1,6 +1,5 @@
 package com.atsuishio.superbwarfare.item.gun.sniper;
 
-import com.atsuishio.superbwarfare.tools.GunsTool;
 import com.atsuishio.superbwarfare.ModUtils;
 import com.atsuishio.superbwarfare.client.PoseTool;
 import com.atsuishio.superbwarfare.client.renderer.item.MosinNagantItemRenderer;
@@ -12,6 +11,7 @@ import com.atsuishio.superbwarfare.item.AnimatedItem;
 import com.atsuishio.superbwarfare.item.gun.GunItem;
 import com.atsuishio.superbwarfare.perk.Perk;
 import com.atsuishio.superbwarfare.perk.PerkHelper;
+import com.atsuishio.superbwarfare.tools.GunsTool;
 import net.minecraft.client.Minecraft;
 import net.minecraft.client.model.HumanoidModel;
 import net.minecraft.client.player.LocalPlayer;
@@ -77,11 +77,11 @@ public class MosinNagantItem extends GunItem implements GeoItem, AnimatedItem {
             return event.setAndContinue(RawAnimation.begin().thenPlay("animation.mosin.shift"));
         }
 
-        if (stack.getOrCreateTag().getInt("reload_stage") == 1 && stack.getOrCreateTag().getInt("ammo") == 0) {
+        if (stack.getOrCreateTag().getInt("reload_stage") == 1 && GunsTool.getGunIntTag(stack, "Ammo", 0) == 0) {
             return event.setAndContinue(RawAnimation.begin().thenPlay("animation.mosin.prepare_empty"));
         }
 
-        if (stack.getOrCreateTag().getInt("reload_stage") == 1 && stack.getOrCreateTag().getInt("ammo") > 0) {
+        if (stack.getOrCreateTag().getInt("reload_stage") == 1 && GunsTool.getGunIntTag(stack, "Ammo", 0) > 0) {
             return event.setAndContinue(RawAnimation.begin().thenPlay("animation.mosin.prepare"));
         }
 
diff --git a/src/main/java/com/atsuishio/superbwarfare/network/message/FireMessage.java b/src/main/java/com/atsuishio/superbwarfare/network/message/FireMessage.java
index 05c92b88b..42918f61a 100644
--- a/src/main/java/com/atsuishio/superbwarfare/network/message/FireMessage.java
+++ b/src/main/java/com/atsuishio/superbwarfare/network/message/FireMessage.java
@@ -106,27 +106,28 @@ public class FireMessage {
     }
 
     private static void handlePlayerShoot(Player player) {
-        var handItem = player.getMainHandItem();
+        var stack = player.getMainHandItem();
 
-        if (!handItem.is(ModTags.Items.GUN)) {
+        if (!stack.is(ModTags.Items.GUN)) {
             return;
         }
 
-        var tag = handItem.getOrCreateTag();
+        var tag = stack.getOrCreateTag();
 
-        if (handItem.getItem() == ModItems.TASER.get()) {
+        if (stack.getItem() == ModItems.TASER.get()) {
             handleTaserFire(player);
         }
 
-        if (handItem.getItem() == ModItems.M_79.get()) {
+        if (stack.getItem() == ModItems.M_79.get()) {
             handleM79Fire(player);
         }
 
-        if (handItem.getItem() == ModItems.RPG.get()) {
+        if (stack.getItem() == ModItems.RPG.get()) {
             handleRpgFire(player);
         }
 
-        if (handItem.getItem() == ModItems.JAVELIN.get() && player.getCapability(ModVariables.PLAYER_VARIABLES_CAPABILITY, null).orElse(new ModVariables.PlayerVariables()).zoom && tag.getInt("ammo") > 0) {
+        if (stack.getItem() == ModItems.JAVELIN.get() && player.getCapability(ModVariables.PLAYER_VARIABLES_CAPABILITY, null)
+                .orElse(new ModVariables.PlayerVariables()).zoom && GunsTool.getGunIntTag(stack, "Ammo", 0) > 0) {
             Entity seekingEntity = SeekTool.seekEntity(player, player.level(), 512, 8);
             if (seekingEntity != null) {
                 tag.putString("TargetEntity", seekingEntity.getStringUUID());
@@ -135,11 +136,11 @@ public class FireMessage {
             }
         }
 
-        if (tag.getDouble("prepare") == 0 && tag.getBoolean("reloading") && tag.getInt("ammo") > 0) {
+        if (tag.getDouble("prepare") == 0 && tag.getBoolean("reloading") && GunsTool.getGunIntTag(stack, "Ammo", 0) > 0) {
             tag.putDouble("force_stop", 1);
         }
 
-        if (handItem.getItem() == ModItems.BOCEK.get()) {
+        if (stack.getItem() == ModItems.BOCEK.get()) {
             player.getCapability(ModVariables.PLAYER_VARIABLES_CAPABILITY, null).ifPresent(capability -> {
                 capability.bowPullHold = true;
                 capability.syncPlayerVariables(player);
@@ -148,7 +149,8 @@ public class FireMessage {
     }
 
     private static void handleGunBolt(Player player, ItemStack stack) {
-        if (GunsTool.getGunIntTag(stack, "BoltActionTime", 0) > 0 && stack.getOrCreateTag().getInt("ammo") > (stack.is(ModTags.Items.REVOLVER) ? -1 : 0) && stack.getOrCreateTag().getInt("bolt_action_anim") == 0
+        if (GunsTool.getGunIntTag(stack, "BoltActionTime", 0) > 0 && GunsTool.getGunIntTag(stack, "Ammo", 0) > (stack.is(ModTags.Items.REVOLVER) ? -1 : 0)
+                && stack.getOrCreateTag().getInt("bolt_action_anim") == 0
                 && !(stack.getOrCreateTag().getBoolean("is_normal_reloading") || stack.getOrCreateTag().getBoolean("is_empty_reloading"))
                 && !stack.getOrCreateTag().getBoolean("reloading")
                 && !stack.getOrCreateTag().getBoolean("charging")) {
@@ -318,9 +320,7 @@ public class FireMessage {
                     iEnergyStorage -> flag.set(iEnergyStorage.getEnergyStored() >= 400 + 100 * perkLevel)
             );
 
-            if (!player.getCooldowns().isOnCooldown(stack.getItem()) && stack.getOrCreateTag().getInt("ammo") > 0
-                    && flag.get()) {
-
+            if (!player.getCooldowns().isOnCooldown(stack.getItem()) && GunsTool.getGunIntTag(stack, "Ammo", 0) > 0 && flag.get()) {
                 player.getCooldowns().addCooldown(stack.getItem(), 5);
 
                 if (player instanceof ServerPlayer serverPlayer) {
@@ -345,7 +345,7 @@ public class FireMessage {
                     level.addFreshEntity(taserBulletProjectile);
                 }
 
-                stack.getOrCreateTag().putInt("ammo", (stack.getOrCreateTag().getInt("ammo") - 1));
+                GunsTool.setGunIntTag(stack, "Ammo", GunsTool.getGunIntTag(stack, "Ammo", 0) - 1);
 
                 stack.getCapability(ForgeCapabilities.ENERGY).ifPresent(
                         energy -> energy.extractEnergy(400 + 100 * perkLevel, false)
@@ -364,7 +364,7 @@ public class FireMessage {
 
         ItemStack stack = player.getMainHandItem();
         if (!stack.getOrCreateTag().getBoolean("reloading")) {
-            if (!player.getCooldowns().isOnCooldown(stack.getItem()) && stack.getOrCreateTag().getInt("ammo") > 0) {
+            if (!player.getCooldowns().isOnCooldown(stack.getItem()) && GunsTool.getGunIntTag(stack, "Ammo", 0) > 0) {
                 boolean zoom = player.getCapability(ModVariables.PLAYER_VARIABLES_CAPABILITY, null).orElse(new ModVariables.PlayerVariables()).zoom;
                 double spread = GunsTool.getGunDoubleTag(stack, "Spread");
 
@@ -402,7 +402,7 @@ public class FireMessage {
                     serverPlayer.level().playSound(null, serverPlayer.getOnPos(), ModSounds.M_79_VERYFAR.get(), SoundSource.PLAYERS, 10, 1);
                 }
 
-                stack.getOrCreateTag().putInt("ammo", (stack.getOrCreateTag().getInt("ammo") - 1));
+                GunsTool.setGunIntTag(stack, "Ammo", GunsTool.getGunIntTag(stack, "Ammo", 0) - 1);
 
                 if (player.level() instanceof ServerLevel && player instanceof ServerPlayer serverPlayer) {
                     ModUtils.PACKET_HANDLER.send(PacketDistributor.PLAYER.with(() -> serverPlayer), new ShootClientMessage(10));
@@ -418,7 +418,7 @@ public class FireMessage {
         ItemStack stack = player.getMainHandItem();
         CompoundTag tag = stack.getOrCreateTag();
 
-        if (!tag.getBoolean("reloading") && !player.getCooldowns().isOnCooldown(stack.getItem()) && tag.getInt("ammo") > 0) {
+        if (!tag.getBoolean("reloading") && !player.getCooldowns().isOnCooldown(stack.getItem()) && GunsTool.getGunIntTag(stack, "Ammo", 0) > 0) {
             boolean zoom = player.getCapability(ModVariables.PLAYER_VARIABLES_CAPABILITY, null).orElse(new ModVariables.PlayerVariables()).zoom;
             double spread = GunsTool.getGunDoubleTag(stack, "Spread");
 
@@ -447,7 +447,7 @@ public class FireMessage {
                         30, 0.4, 0.4, 0.4, 0.005, true);
             }
 
-            if (tag.getInt("ammo") == 1) {
+            if (GunsTool.getGunIntTag(stack, "Ammo", 0) == 1) {
                 tag.putBoolean("empty", true);
                 tag.putBoolean("close_hammer", true);
             }
@@ -461,7 +461,7 @@ public class FireMessage {
                 serverPlayer.level().playSound(null, serverPlayer.getOnPos(), ModSounds.RPG_VERYFAR.get(), SoundSource.PLAYERS, 10, 1);
             }
 
-            tag.putInt("ammo", tag.getInt("ammo") - 1);
+            GunsTool.setGunIntTag(stack, "Ammo", GunsTool.getGunIntTag(stack, "Ammo", 0) - 1);
 
             if (player.level() instanceof ServerLevel && player instanceof ServerPlayer serverPlayer) {
                 ModUtils.PACKET_HANDLER.send(PacketDistributor.PLAYER.with(() -> serverPlayer), new ShootClientMessage(10));
@@ -527,7 +527,7 @@ public class FireMessage {
             serverPlayer.level().playSound(null, serverPlayer.getOnPos(), ModSounds.JAVELIN_FAR.get(), SoundSource.PLAYERS, 10, 1);
         }
 
-        tag.putInt("ammo", tag.getInt("ammo") - 1);
+        GunsTool.setGunIntTag(stack, "Ammo", GunsTool.getGunIntTag(stack, "Ammo", 0) - 1);
 
         if (player.level() instanceof ServerLevel && player instanceof ServerPlayer serverPlayer) {
             ModUtils.PACKET_HANDLER.send(PacketDistributor.PLAYER.with(() -> serverPlayer), new ShootClientMessage(10));
diff --git a/src/main/java/com/atsuishio/superbwarfare/network/message/ReloadMessage.java b/src/main/java/com/atsuishio/superbwarfare/network/message/ReloadMessage.java
index 6e8ea2254..533f73814 100644
--- a/src/main/java/com/atsuishio/superbwarfare/network/message/ReloadMessage.java
+++ b/src/main/java/com/atsuishio/superbwarfare/network/message/ReloadMessage.java
@@ -66,7 +66,7 @@ public class ReloadMessage {
                 boolean canSingleReload = GunsTool.getGunIntTag(stack, "IterativeTime", 0) != 0;
                 boolean canReload = (GunsTool.getGunIntTag(stack, "NormalReloadTime") != 0 || GunsTool.getGunIntTag(stack, "EmptyReloadTime") != 0)
                         && GunsTool.getGunIntTag(stack, "ClipLoad", 0) != 1;
-                boolean clipLoad = tag.getInt("ammo") == 0 && GunsTool.getGunIntTag(stack, "ClipLoad", 0) == 1;
+                boolean clipLoad = GunsTool.getGunIntTag(stack, "Ammo", 0) == 0 && GunsTool.getGunIntTag(stack, "ClipLoad", 0) == 1;
 
                 // 检查备弹
                 int count = 0;
@@ -101,22 +101,22 @@ public class ReloadMessage {
 
                     if (stack.is(ModTags.Items.OPEN_BOLT)) {
                         if (stack.is(ModTags.Items.EXTRA_ONE_AMMO)) {
-                            if (tag.getInt("ammo") < magazine + tag.getInt("customMag") + 1) {
+                            if (GunsTool.getGunIntTag(stack, "Ammo", 0) < magazine + tag.getInt("customMag") + 1) {
                                 tag.putBoolean("start_reload", true);
                             }
                         } else {
-                            if (tag.getInt("ammo") < magazine + tag.getInt("customMag")) {
+                            if (GunsTool.getGunIntTag(stack, "Ammo", 0) < magazine + tag.getInt("customMag")) {
                                 tag.putBoolean("start_reload", true);
                             }
                         }
-                    } else if (tag.getInt("ammo") < magazine + tag.getInt("customMag")) {
+                    } else if (GunsTool.getGunIntTag(stack, "Ammo", 0) < magazine + tag.getInt("customMag")) {
                         tag.putBoolean("start_reload", true);
                     }
                     return;
                 }
 
                 if (canSingleReload) {
-                    if (tag.getInt("ammo") < GunsTool.getGunIntTag(stack, "Magazine", 0) + tag.getInt("customMag")) {
+                    if (GunsTool.getGunIntTag(stack, "Ammo", 0) < GunsTool.getGunIntTag(stack, "Magazine", 0) + tag.getInt("customMag")) {
                         tag.putBoolean("start_single_reload", true);
                     }
                 }
diff --git a/src/main/java/com/atsuishio/superbwarfare/network/message/ShootMessage.java b/src/main/java/com/atsuishio/superbwarfare/network/message/ShootMessage.java
index 9baedb7fe..0bbba5d7b 100644
--- a/src/main/java/com/atsuishio/superbwarfare/network/message/ShootMessage.java
+++ b/src/main/java/com/atsuishio/superbwarfare/network/message/ShootMessage.java
@@ -62,9 +62,9 @@ public class ShootMessage {
         if (stack.is(ModTags.Items.NORMAL_GUN)) {
             int projectileAmount = GunsTool.getGunIntTag(stack, "ProjectileAmount", 1);
 
-            if (stack.getOrCreateTag().getInt("ammo") > 0) {
+            if (GunsTool.getGunIntTag(stack, "Ammo", 0) > 0) {
                 // 空仓挂机
-                if (stack.getOrCreateTag().getInt("ammo") == 1) {
+                if (GunsTool.getGunIntTag(stack, "Ammo", 0) == 1) {
                     stack.getOrCreateTag().putBoolean("HoldOpen", true);
                 }
 
@@ -73,15 +73,15 @@ public class ShootMessage {
                 }
 
                 // 判断是否为栓动武器（BoltActionTime > 0），并在开火后给一个需要上膛的状态
-                if (GunsTool.getGunIntTag(stack, "BoltActionTime", 0) > 0 && stack.getOrCreateTag().getInt("ammo") > (stack.is(ModTags.Items.REVOLVER) ? 0 : 1)) {
+                if (GunsTool.getGunIntTag(stack, "BoltActionTime", 0) > 0 && GunsTool.getGunIntTag(stack, "Ammo", 0) > (stack.is(ModTags.Items.REVOLVER) ? 0 : 1)) {
                     GunsTool.setGunBooleanTag(stack, "NeedBoltAction", true);
                 }
 
-                stack.getOrCreateTag().putInt("ammo", (stack.getOrCreateTag().getInt("ammo") - 1));
+                GunsTool.setGunIntTag(stack, "Ammo", GunsTool.getGunIntTag(stack, "Ammo", 0) - 1);
 
                 stack.getOrCreateTag().putDouble("empty", 1);
 
-                if (stack.getItem() == ModItems.M_60.get() && stack.getOrCreateTag().getInt("ammo") <= 5) {
+                if (stack.getItem() == ModItems.M_60.get() && GunsTool.getGunIntTag(stack, "Ammo", 0) <= 5) {
                     stack.getOrCreateTag().putBoolean("HideBulletChain", true);
                 }
 
diff --git a/src/main/java/com/atsuishio/superbwarfare/tools/GunsTool.java b/src/main/java/com/atsuishio/superbwarfare/tools/GunsTool.java
index 3521e6955..4cd4e0182 100644
--- a/src/main/java/com/atsuishio/superbwarfare/tools/GunsTool.java
+++ b/src/main/java/com/atsuishio/superbwarfare/tools/GunsTool.java
@@ -70,7 +70,8 @@ public class GunsTool {
                 data.putDouble(k, v);
                 stack.addTagElement("GunData", data);
             });
-            stack.getOrCreateTag().putInt("ammo", GunsTool.getGunIntTag(stack, "Magazine", 0) + stack.getOrCreateTag().getInt("customMag"));
+            GunsTool.setGunIntTag(stack, "Ammo", GunsTool.getGunIntTag(stack, "Magazine", 0)
+                    + stack.getOrCreateTag().getInt("customMag"));
         }
     }
 
@@ -102,7 +103,7 @@ public class GunsTool {
         CompoundTag tag = stack.getOrCreateTag();
 
         int mag = GunsTool.getGunIntTag(stack, "Magazine", 0) + tag.getInt("customMag");
-        int ammo = tag.getInt("ammo");
+        int ammo = GunsTool.getGunIntTag(stack, "Ammo", 0);
         int ammoToAdd = mag - ammo + (extraOne ? 1 : 0);
 
         // 空仓换弹的栓动武器应该在换弹后取消待上膛标记
@@ -131,7 +132,7 @@ public class GunsTool {
 
         int needToAdd = ammo + Math.min(ammoToAdd, playerAmmo);
 
-        tag.putInt("ammo", needToAdd);
+        GunsTool.setGunIntTag(stack, "Ammo", needToAdd);
         tag.putBoolean("is_normal_reloading", false);
         tag.putBoolean("is_empty_reloading", false);
     }