diff --git a/src/main/java/com/atsuishio/superbwarfare/client/overlay/VehicleHudOverlay.java b/src/main/java/com/atsuishio/superbwarfare/client/overlay/VehicleHudOverlay.java
index 76ef18a97..dc2b92bf5 100644
--- a/src/main/java/com/atsuishio/superbwarfare/client/overlay/VehicleHudOverlay.java
+++ b/src/main/java/com/atsuishio/superbwarfare/client/overlay/VehicleHudOverlay.java
@@ -35,7 +35,6 @@ import org.joml.Math;
 
 import static com.atsuishio.superbwarfare.client.RenderHelper.preciseBlit;
 import static com.atsuishio.superbwarfare.client.overlay.CrossHairOverlay.*;
-import static com.atsuishio.superbwarfare.entity.vehicle.Ah6Entity.WEAPON_TYPE;
 import static com.atsuishio.superbwarfare.entity.vehicle.Lav150Entity.COAX_HEAT;
 import static com.atsuishio.superbwarfare.entity.vehicle.Lav150Entity.HEAT;
 import static com.atsuishio.superbwarfare.entity.vehicle.Yx100Entity.AMMO;
@@ -105,7 +104,7 @@ public class VehicleHudOverlay {
 
             if (player.getInventory().hasAnyMatching(s -> s.is(ModItems.CREATIVE_AMMO_BOX.get()))
                     && !(iVehicle instanceof ICannonEntity
-                    || (iVehicle instanceof Ah6Entity ah6Entity && ah6Entity.getEntityData().get(WEAPON_TYPE) == 1))
+                    || (iVehicle instanceof Ah6Entity ah6Entity && ah6Entity.getWeaponType() == 1))
             ) {
                 event.getGuiGraphics().drawString(
                         Minecraft.getInstance().font,
@@ -157,7 +156,7 @@ public class VehicleHudOverlay {
             return Component.translatable("des.superbwarfare.tips.ammo_type.cal50").getString();
         }
         if (iVehicle instanceof Ah6Entity ah6Entity) {
-            if (ah6Entity.getEntityData().get(WEAPON_TYPE) == 0) {
+            if (ah6Entity.getWeaponType() == 0) {
                 return Component.translatable("des.superbwarfare.tips.ammo_type.20mm_cannon").getString();
             } else {
                 return Component.translatable("des.superbwarfare.tips.ammo_type.rocket").getString();
diff --git a/src/main/java/com/atsuishio/superbwarfare/entity/vehicle/Ah6Entity.java b/src/main/java/com/atsuishio/superbwarfare/entity/vehicle/Ah6Entity.java
index 9aae6fdb4..05b4234a7 100644
--- a/src/main/java/com/atsuishio/superbwarfare/entity/vehicle/Ah6Entity.java
+++ b/src/main/java/com/atsuishio/superbwarfare/entity/vehicle/Ah6Entity.java
@@ -211,10 +211,9 @@ public class Ah6Entity extends ContainerMobileVehicleEntity implements GeoEntity
                 return AmmoType.HEAVY.get(stack) > 0;
             }
             return false;
-        }).mapToInt(AmmoType.HEAVY::get).sum()
-                + this.getItemStacks().stream().filter(stack -> stack.is(ModItems.HEAVY_AMMO.get())).mapToInt(ItemStack::getCount).sum();
+        }).mapToInt(AmmoType.HEAVY::get).sum() + countItem(ModItems.HEAVY_AMMO.get());
 
-        if ((this.getItemStacks().stream().filter(stack -> stack.is(ModItems.ROCKET_70.get())).mapToInt(ItemStack::getCount).sum() > 0 || player.getInventory().hasAnyMatching(s -> s.is(ModItems.CREATIVE_AMMO_BOX.get()))) && reloadCoolDown == 0 && this.getEntityData().get(LOADED_ROCKET) < 14) {
+        if ((countItem(ModItems.ROCKET_70.get()) > 0 || player.getInventory().hasAnyMatching(s -> s.is(ModItems.CREATIVE_AMMO_BOX.get()))) && reloadCoolDown == 0 && this.getEntityData().get(LOADED_ROCKET) < 14) {
             this.entityData.set(LOADED_ROCKET, this.getEntityData().get(LOADED_ROCKET) + 1);
             reloadCoolDown = 25;
             if (!player.getInventory().hasAnyMatching(s -> s.is(ModItems.CREATIVE_AMMO_BOX.get()))) {
@@ -223,7 +222,7 @@ public class Ah6Entity extends ContainerMobileVehicleEntity implements GeoEntity
             this.level().playSound(null, this, ModSounds.MISSILE_RELOAD.get(), this.getSoundSource(), 1, 1);
         }
 
-        if (this.getEntityData().get(WEAPON_TYPE) == 0) {
+        if (this.getWeaponType() == 0) {
             this.entityData.set(AMMO, ammoCount);
         } else {
             this.entityData.set(AMMO, this.getEntityData().get(LOADED_ROCKET));
@@ -539,7 +538,7 @@ public class Ah6Entity extends ContainerMobileVehicleEntity implements GeoEntity
         Vector4f worldPositionRight;
         Vector4f worldPositionLeft;
 
-        if (entityData.get(WEAPON_TYPE) == 0) {
+        if (getWeaponType() == 0) {
             if (this.cannotFire) return;
 
             x = 1.15f;
@@ -616,7 +615,7 @@ public class Ah6Entity extends ContainerMobileVehicleEntity implements GeoEntity
                     ModUtils.PACKET_HANDLER.send(PacketDistributor.PLAYER.with(() -> serverPlayer), new ShakeClientMessage(6, 5, 7, this.getX(), this.getEyeY(), this.getZ()));
                 }
             }
-        } else if (entityData.get(WEAPON_TYPE) == 1 && this.getEntityData().get(LOADED_ROCKET) > 0) {
+        } else if (getWeaponType() == 1 && this.getEntityData().get(LOADED_ROCKET) > 0) {
             x = 1.7f;
             y = 0.62f - 1.45f;
             z = 0.8f;
@@ -712,9 +711,9 @@ public class Ah6Entity extends ContainerMobileVehicleEntity implements GeoEntity
 
     @Override
     public boolean canShoot(Player player) {
-        if (entityData.get(WEAPON_TYPE) == 0) {
+        if (getWeaponType() == 0) {
             return (this.entityData.get(AMMO) > 0 || player.getInventory().hasAnyMatching(s -> s.is(ModItems.CREATIVE_AMMO_BOX.get()))) && !cannotFire;
-        } else if (entityData.get(WEAPON_TYPE) == 1) {
+        } else if (getWeaponType() == 1) {
             return this.entityData.get(AMMO) > 0;
         }
         return false;
@@ -767,8 +766,8 @@ public class Ah6Entity extends ContainerMobileVehicleEntity implements GeoEntity
 
     @Override
     public void changeWeapon(int scroll) {
-        var type = (entityData.get(WEAPON_TYPE) + scroll + 2) % 2;
-        entityData.set(WEAPON_TYPE, type);
+        var type = (getWeaponType() + scroll + 2) % 2;
+        setWeaponType(type);
 
         var sound = switch (type) {
             case 0 -> ModSounds.INTO_MISSILE.get();
@@ -784,6 +783,11 @@ public class Ah6Entity extends ContainerMobileVehicleEntity implements GeoEntity
         return entityData.get(WEAPON_TYPE);
     }
 
+    @Override
+    public void setWeaponType(int type) {
+        entityData.set(WEAPON_TYPE, type);
+    }
+
     @Override
     public ResourceLocation getVehicleIcon() {
         return ModUtils.loc("textures/vehicle_icon/ah_6_icon.png");
diff --git a/src/main/java/com/atsuishio/superbwarfare/entity/vehicle/Bmp2Entity.java b/src/main/java/com/atsuishio/superbwarfare/entity/vehicle/Bmp2Entity.java
index 8c36fd673..92df5707a 100644
--- a/src/main/java/com/atsuishio/superbwarfare/entity/vehicle/Bmp2Entity.java
+++ b/src/main/java/com/atsuishio/superbwarfare/entity/vehicle/Bmp2Entity.java
@@ -274,10 +274,9 @@ public class Bmp2Entity extends ContainerMobileVehicleEntity implements GeoEntit
                 return AmmoType.RIFLE.get(stack) > 0;
             }
             return false;
-        }).mapToInt(AmmoType.RIFLE::get).sum()
-                + this.getItemStacks().stream().filter(stack -> stack.is(ModItems.RIFLE_AMMO.get())).mapToInt(ItemStack::getCount).sum();
+        }).mapToInt(AmmoType.RIFLE::get).sum() + countItem(ModItems.RIFLE_AMMO.get());
 
-        if ((this.getItemStacks().stream().filter(stack -> stack.is(ModItems.WIRE_GUIDE_MISSILE.get())).mapToInt(ItemStack::getCount).sum() > 0
+        if ((countItem(ModItems.WIRE_GUIDE_MISSILE.get()) > 0
                 || player.getInventory().hasAnyMatching(s -> s.is(ModItems.CREATIVE_AMMO_BOX.get())))
                 && this.reloadCoolDown <= 0 && this.getEntityData().get(LOADED_MISSILE) < 1) {
             this.entityData.set(LOADED_MISSILE, this.getEntityData().get(LOADED_MISSILE) + 1);
@@ -288,9 +287,9 @@ public class Bmp2Entity extends ContainerMobileVehicleEntity implements GeoEntit
             this.level().playSound(null, this, ModSounds.BMP_MISSILE_RELOAD.get(), this.getSoundSource(), 1, 1);
         }
 
-        if (this.getEntityData().get(WEAPON_TYPE) == 0) {
-            this.entityData.set(AMMO, this.getItemStacks().stream().filter(stack -> stack.is(ModItems.SMALL_SHELL.get())).mapToInt(ItemStack::getCount).sum());
-        } else if (this.getEntityData().get(WEAPON_TYPE) == 1) {
+        if (getWeaponType() == 0) {
+            this.entityData.set(AMMO, countItem(ModItems.SMALL_SHELL.get()));
+        } else if (getWeaponType() == 1) {
             this.entityData.set(AMMO, ammoCount);
         } else {
             this.entityData.set(AMMO, this.getEntityData().get(LOADED_MISSILE));
@@ -308,7 +307,7 @@ public class Bmp2Entity extends ContainerMobileVehicleEntity implements GeoEntit
     @Override
     public void vehicleShoot(Player player) {
         Matrix4f transform = getBarrelTransform();
-        if (entityData.get(WEAPON_TYPE) == 0) {
+        if (getWeaponType() == 0) {
             if (this.cannotFire) return;
             float x = -0.1125f;
             float y = 0.174025f;
@@ -349,7 +348,7 @@ public class Bmp2Entity extends ContainerMobileVehicleEntity implements GeoEntit
             this.entityData.set(HEAT, this.entityData.get(HEAT) + 7);
             this.entityData.set(FIRE_ANIM, 3);
             this.getItemStacks().stream().filter(stack -> stack.is(ModItems.SMALL_SHELL.get())).findFirst().ifPresent(stack -> stack.shrink(1));
-        } else if (entityData.get(WEAPON_TYPE) == 1) {
+        } else if (getWeaponType() == 1) {
             if (this.cannotFireCoax) return;
             float x = 0.1125f;
             float y = 0.174025f;
@@ -397,7 +396,7 @@ public class Bmp2Entity extends ContainerMobileVehicleEntity implements GeoEntit
                     serverPlayer.playSound(ModSounds.M_60_VERYFAR.get(), 12, 1);
                 }
             }
-        } else if (entityData.get(WEAPON_TYPE) == 2 && this.getEntityData().get(LOADED_MISSILE) > 0) {
+        } else if (getWeaponType() == 2 && this.getEntityData().get(LOADED_MISSILE) > 0) {
             Matrix4f transformT = getBarrelTransform();
             Vector4f worldPosition = transformPosition(transformT, 0, 1, 0);
 
@@ -682,11 +681,11 @@ public class Bmp2Entity extends ContainerMobileVehicleEntity implements GeoEntit
     }
 
     private PlayState firePredicate(AnimationState<Bmp2Entity> event) {
-        if (this.entityData.get(FIRE_ANIM) > 1 && entityData.get(WEAPON_TYPE) == 0) {
+        if (this.entityData.get(FIRE_ANIM) > 1 && getWeaponType() == 0) {
             return event.setAndContinue(RawAnimation.begin().thenPlay("animation.lav.fire"));
         }
 
-        if (this.entityData.get(FIRE_ANIM) > 0 && entityData.get(WEAPON_TYPE) == 1) {
+        if (this.entityData.get(FIRE_ANIM) > 0 && getWeaponType() == 1) {
             return event.setAndContinue(RawAnimation.begin().thenPlay("animation.lav.fire2"));
         }
 
@@ -720,9 +719,9 @@ public class Bmp2Entity extends ContainerMobileVehicleEntity implements GeoEntit
 
     @Override
     public int mainGunRpm() {
-        if (entityData.get(WEAPON_TYPE) == 0) {
+        if (getWeaponType() == 0) {
             return 250;
-        } else if (entityData.get(WEAPON_TYPE) == 1) {
+        } else if (getWeaponType() == 1) {
             return 750;
         }
         return 250;
@@ -730,11 +729,11 @@ public class Bmp2Entity extends ContainerMobileVehicleEntity implements GeoEntit
 
     @Override
     public boolean canShoot(Player player) {
-        if (entityData.get(WEAPON_TYPE) == 0) {
+        if (getWeaponType() == 0) {
             return (this.entityData.get(AMMO) > 0 || player.getInventory().hasAnyMatching(s -> s.is(ModItems.CREATIVE_AMMO_BOX.get()))) && !cannotFire;
-        } else if (entityData.get(WEAPON_TYPE) == 1) {
+        } else if (getWeaponType() == 1) {
             return (this.entityData.get(AMMO) > 0 || player.getInventory().hasAnyMatching(s -> s.is(ModItems.CREATIVE_AMMO_BOX.get()))) && !cannotFireCoax;
-        } else if (entityData.get(WEAPON_TYPE) == 2) {
+        } else if (getWeaponType() == 2) {
             return (this.entityData.get(LOADED_MISSILE) > 0);
         }
         return false;
@@ -762,8 +761,8 @@ public class Bmp2Entity extends ContainerMobileVehicleEntity implements GeoEntit
 
     @Override
     public void changeWeapon(int scroll) {
-        var type = (entityData.get(WEAPON_TYPE) + scroll + 3) % 3;
-        entityData.set(WEAPON_TYPE, type);
+        var type = (getWeaponType() + scroll + 3) % 3;
+        setWeaponType(type);
 
         var sound = switch (type) {
             case 0, 2 -> ModSounds.INTO_MISSILE.get();
@@ -779,6 +778,11 @@ public class Bmp2Entity extends ContainerMobileVehicleEntity implements GeoEntit
         return entityData.get(WEAPON_TYPE);
     }
 
+    @Override
+    public void setWeaponType(int type) {
+        entityData.set(WEAPON_TYPE, type);
+    }
+
     @Override
     public ResourceLocation getVehicleIcon() {
         return ModUtils.loc("textures/vehicle_icon/bmp2_icon.png");
diff --git a/src/main/java/com/atsuishio/superbwarfare/entity/vehicle/ContainerMobileVehicleEntity.java b/src/main/java/com/atsuishio/superbwarfare/entity/vehicle/ContainerMobileVehicleEntity.java
index 1f2dab7a5..ea01e6793 100644
--- a/src/main/java/com/atsuishio/superbwarfare/entity/vehicle/ContainerMobileVehicleEntity.java
+++ b/src/main/java/com/atsuishio/superbwarfare/entity/vehicle/ContainerMobileVehicleEntity.java
@@ -12,10 +12,12 @@ import net.minecraft.world.InteractionHand;
 import net.minecraft.world.InteractionResult;
 import net.minecraft.world.entity.EntityType;
 import net.minecraft.world.entity.HasCustomInventoryScreen;
+import net.minecraft.world.entity.item.ItemEntity;
 import net.minecraft.world.entity.player.Inventory;
 import net.minecraft.world.entity.player.Player;
 import net.minecraft.world.entity.vehicle.ContainerEntity;
 import net.minecraft.world.inventory.AbstractContainerMenu;
+import net.minecraft.world.item.Item;
 import net.minecraft.world.item.ItemStack;
 import net.minecraft.world.level.Level;
 import net.minecraft.world.level.gameevent.GameEvent;
@@ -23,6 +25,7 @@ import net.minecraftforge.common.capabilities.Capability;
 import net.minecraftforge.common.capabilities.ForgeCapabilities;
 import net.minecraftforge.common.util.LazyOptional;
 import net.minecraftforge.items.wrapper.InvWrapper;
+import org.jetbrains.annotations.NotNull;
 import org.jetbrains.annotations.Nullable;
 import org.joml.Math;
 
@@ -129,6 +132,70 @@ public class ContainerMobileVehicleEntity extends MobileVehicleEntity implements
         return this.items;
     }
 
+    /**
+     * 计算当前载具内指定物品的数量
+     *
+     * @param item 物品类型
+     * @return 物品数量
+     */
+    public int countItem(@NotNull Item item) {
+        return this.getItemStacks().stream()
+                .filter(stack -> stack.is(item))
+                .mapToInt(ItemStack::getCount)
+                .sum();
+    }
+
+    /**
+     * 消耗载具内指定物品
+     *
+     * @param item  物品类型
+     * @param count 要消耗的数量
+     * @return 成功消耗的物品数量
+     */
+    public int consumeItem(Item item, int count) {
+        int initialCount = count;
+        var items = this.getItemStacks().stream().filter(stack -> stack.is(item)).toList();
+        for (var stack : items) {
+            var countToShrink = Math.min(stack.getCount(), count);
+            stack.shrink(countToShrink);
+            count -= countToShrink;
+            if (count <= 0) break;
+        }
+        return initialCount - count;
+    }
+
+    /**
+     * 尝试插入指定物品指定数量，如果载具内已满则生成掉落物
+     *
+     * @param item  物品类型
+     * @param count 要插入的数量
+     */
+    public void insertItem(Item item, int count) {
+        var defaultStack = new ItemStack(item);
+        var maxStackSize = item.getMaxStackSize(defaultStack);
+
+        for (int i = 0; i < this.getItemStacks().size(); i++) {
+            var stack = this.getItemStacks().get(i);
+
+            if (stack.is(item) && stack.getCount() < maxStackSize) {
+                var countToAdd = Math.min(maxStackSize - stack.getCount(), count);
+                stack.grow(countToAdd);
+                count -= countToAdd;
+            } else if (stack.isEmpty()) {
+                var countToAdd = Math.min(maxStackSize, count);
+                this.getItemStacks().set(i, new ItemStack(item, countToAdd));
+                count -= countToAdd;
+            }
+
+            if (count <= 0) break;
+        }
+
+        if (count > 0) {
+            var stackToDrop = new ItemStack(item, count);
+            this.level().addFreshEntity(new ItemEntity(this.level(), this.getX(), this.getY(), this.getZ(), stackToDrop));
+        }
+    }
+
     @Override
     public void clearItemStacks() {
         this.items.clear();
diff --git a/src/main/java/com/atsuishio/superbwarfare/entity/vehicle/Lav150Entity.java b/src/main/java/com/atsuishio/superbwarfare/entity/vehicle/Lav150Entity.java
index b03274f73..41e373093 100644
--- a/src/main/java/com/atsuishio/superbwarfare/entity/vehicle/Lav150Entity.java
+++ b/src/main/java/com/atsuishio/superbwarfare/entity/vehicle/Lav150Entity.java
@@ -249,20 +249,18 @@ public class Lav150Entity extends ContainerMobileVehicleEntity implements GeoEnt
     }
 
     private void handleAmmo() {
-        if (!(this.getFirstPassenger() instanceof Player player)) return;
+        if (!(this.getFirstPassenger() instanceof Player)) return;
 
         int ammoCount = this.getItemStacks().stream().filter(stack -> {
             if (stack.is(ModItems.AMMO_BOX.get())) {
                 return AmmoType.RIFLE.get(stack) > 0;
             }
             return false;
-        }).mapToInt(AmmoType.RIFLE::get).sum()
-                + this.getItemStacks().stream().filter(stack -> stack.is(ModItems.RIFLE_AMMO.get())).mapToInt(ItemStack::getCount).sum();
+        }).mapToInt(AmmoType.RIFLE::get).sum() + countItem(ModItems.RIFLE_AMMO.get());
 
-
-        if (this.getEntityData().get(WEAPON_TYPE) == 0) {
-            this.entityData.set(AMMO, this.getItemStacks().stream().filter(stack -> stack.is(ModItems.SMALL_SHELL.get())).mapToInt(ItemStack::getCount).sum());
-        } else if (this.getEntityData().get(WEAPON_TYPE) == 1) {
+        if (getWeaponType() == 0) {
+            this.entityData.set(AMMO, countItem(ModItems.SMALL_SHELL.get()));
+        } else if (getWeaponType() == 1) {
             this.entityData.set(AMMO, ammoCount);
         }
     }
@@ -280,7 +278,7 @@ public class Lav150Entity extends ContainerMobileVehicleEntity implements GeoEnt
         boolean hasCreativeAmmo = player.getInventory().hasAnyMatching(s -> s.is(ModItems.CREATIVE_AMMO_BOX.get()));
 
         Matrix4f transform = getBarrelTransform();
-        if (entityData.get(WEAPON_TYPE) == 0) {
+        if (getWeaponType() == 0) {
             if (this.cannotFire) return;
             float x = -0.0234375f;
             float y = 0f;
@@ -322,7 +320,7 @@ public class Lav150Entity extends ContainerMobileVehicleEntity implements GeoEnt
             this.entityData.set(FIRE_ANIM, 3);
             this.getItemStacks().stream().filter(stack -> stack.is(ModItems.SMALL_SHELL.get())).findFirst().ifPresent(stack -> stack.shrink(1));
 
-        } else if (entityData.get(WEAPON_TYPE) == 1) {
+        } else if (getWeaponType() == 1) {
             if (this.cannotFireCoax) return;
             float x = 0.3f;
             float y = 0.08f;
@@ -629,11 +627,11 @@ public class Lav150Entity extends ContainerMobileVehicleEntity implements GeoEnt
     }
 
     private PlayState firePredicate(AnimationState<Lav150Entity> event) {
-        if (this.entityData.get(FIRE_ANIM) > 1 && entityData.get(WEAPON_TYPE) == 0) {
+        if (this.entityData.get(FIRE_ANIM) > 1 && getWeaponType() == 0) {
             return event.setAndContinue(RawAnimation.begin().thenPlay("animation.lav.fire"));
         }
 
-        if (this.entityData.get(FIRE_ANIM) > 0 && entityData.get(WEAPON_TYPE) == 1) {
+        if (this.entityData.get(FIRE_ANIM) > 0 && getWeaponType() == 1) {
             return event.setAndContinue(RawAnimation.begin().thenPlay("animation.lav.fire2"));
         }
 
@@ -667,9 +665,9 @@ public class Lav150Entity extends ContainerMobileVehicleEntity implements GeoEnt
 
     @Override
     public int mainGunRpm() {
-        if (entityData.get(WEAPON_TYPE) == 0) {
+        if (getWeaponType() == 0) {
             return 300;
-        } else if (entityData.get(WEAPON_TYPE) == 1) {
+        } else if (getWeaponType() == 1) {
             return 600;
         }
         return 300;
@@ -677,9 +675,9 @@ public class Lav150Entity extends ContainerMobileVehicleEntity implements GeoEnt
 
     @Override
     public boolean canShoot(Player player) {
-        if (entityData.get(WEAPON_TYPE) == 0) {
+        if (getWeaponType() == 0) {
             return (this.entityData.get(AMMO) > 0 || player.getInventory().hasAnyMatching(s -> s.is(ModItems.CREATIVE_AMMO_BOX.get()))) && !cannotFire;
-        } else if (entityData.get(WEAPON_TYPE) == 1) {
+        } else if (getWeaponType() == 1) {
             return (this.entityData.get(AMMO) > 0 || player.getInventory().hasAnyMatching(s -> s.is(ModItems.CREATIVE_AMMO_BOX.get()))) && !cannotFireCoax;
         }
         return false;
@@ -707,8 +705,8 @@ public class Lav150Entity extends ContainerMobileVehicleEntity implements GeoEnt
 
     @Override
     public void changeWeapon(int scroll) {
-        var type = (entityData.get(WEAPON_TYPE) + scroll + 2) % 2;
-        entityData.set(WEAPON_TYPE, type);
+        var type = (getWeaponType() + scroll + 2) % 2;
+        setWeaponType(type);
 
         var sound = switch (type) {
             case 0 -> ModSounds.INTO_MISSILE.get();
@@ -724,6 +722,11 @@ public class Lav150Entity extends ContainerMobileVehicleEntity implements GeoEnt
         return entityData.get(WEAPON_TYPE);
     }
 
+    @Override
+    public void setWeaponType(int type) {
+        entityData.set(WEAPON_TYPE, type);
+    }
+
     @Override
     public ResourceLocation getVehicleIcon() {
         return ModUtils.loc("textures/vehicle_icon/lav150_icon.png");
diff --git a/src/main/java/com/atsuishio/superbwarfare/entity/vehicle/MultiWeaponVehicleEntity.java b/src/main/java/com/atsuishio/superbwarfare/entity/vehicle/MultiWeaponVehicleEntity.java
index de957cb62..f3d12d984 100644
--- a/src/main/java/com/atsuishio/superbwarfare/entity/vehicle/MultiWeaponVehicleEntity.java
+++ b/src/main/java/com/atsuishio/superbwarfare/entity/vehicle/MultiWeaponVehicleEntity.java
@@ -5,4 +5,6 @@ public interface MultiWeaponVehicleEntity extends IArmedVehicleEntity {
     void changeWeapon(int scroll);
 
     int getWeaponType();
+
+    void setWeaponType(int type);
 }
diff --git a/src/main/java/com/atsuishio/superbwarfare/entity/vehicle/SpeedboatEntity.java b/src/main/java/com/atsuishio/superbwarfare/entity/vehicle/SpeedboatEntity.java
index dbe981d72..c36eefbf0 100644
--- a/src/main/java/com/atsuishio/superbwarfare/entity/vehicle/SpeedboatEntity.java
+++ b/src/main/java/com/atsuishio/superbwarfare/entity/vehicle/SpeedboatEntity.java
@@ -203,8 +203,7 @@ public class SpeedboatEntity extends ContainerMobileVehicleEntity implements Geo
                 return AmmoType.HEAVY.get(stack) > 0;
             }
             return false;
-        }).mapToInt(AmmoType.HEAVY::get).sum()
-                + this.getItemStacks().stream().filter(stack -> stack.is(ModItems.HEAVY_AMMO.get())).mapToInt(ItemStack::getCount).sum();
+        }).mapToInt(AmmoType.HEAVY::get).sum() + countItem(ModItems.HEAVY_AMMO.get());
 
 
         this.entityData.set(AMMO, ammoCount);
diff --git a/src/main/java/com/atsuishio/superbwarfare/entity/vehicle/VehicleEntity.java b/src/main/java/com/atsuishio/superbwarfare/entity/vehicle/VehicleEntity.java
index 925bc413c..3087349b0 100644
--- a/src/main/java/com/atsuishio/superbwarfare/entity/vehicle/VehicleEntity.java
+++ b/src/main/java/com/atsuishio/superbwarfare/entity/vehicle/VehicleEntity.java
@@ -376,17 +376,12 @@ public class VehicleEntity extends Entity {
             }
         }
 
-        if (this.getHealth() <= 0.25 * this.getMaxHealth()) {
-            if (this.level() instanceof ServerLevel serverLevel) {
-                ParticleTool.sendParticle(serverLevel, ParticleTypes.LARGE_SMOKE, this.getX(), this.getY() + 0.7f * getBbHeight(), this.getZ(), 1, 0.35 * this.getBbWidth(), 0.15 * this.getBbHeight(), 0.35 * this.getBbWidth(), 0.01, true);
-                ParticleTool.sendParticle(serverLevel, ParticleTypes.CAMPFIRE_COSY_SMOKE, this.getX(), this.getY() + 0.7f * getBbHeight(), this.getZ(), 1, 0.35 * this.getBbWidth(), 0.15 * this.getBbHeight(), 0.35 * this.getBbWidth(), 0.01, true);
+        if (this.level() instanceof ServerLevel serverLevel) {
+            if (this.getHealth() <= 0.25 * this.getMaxHealth()) {
+                playLowHealthParticle(serverLevel);
             }
-        }
-
-        if (this.getHealth() <= 0.15 * this.getMaxHealth()) {
-            if (this.level() instanceof ServerLevel serverLevel) {
-                ParticleTool.sendParticle(serverLevel, ParticleTypes.LARGE_SMOKE, this.getX(), this.getY() + 0.7f * getBbHeight(), this.getZ(), 1, 0.35 * this.getBbWidth(), 0.15 * this.getBbHeight(), 0.35 * this.getBbWidth(), 0.01, true);
-                ParticleTool.sendParticle(serverLevel, ParticleTypes.CAMPFIRE_COSY_SMOKE, this.getX(), this.getY() + 0.7f * getBbHeight(), this.getZ(), 1, 0.35 * this.getBbWidth(), 0.15 * this.getBbHeight(), 0.35 * this.getBbWidth(), 0.01, true);
+            if (this.getHealth() <= 0.15 * this.getMaxHealth()) {
+                playLowHealthParticle(serverLevel);
             }
         }
 
@@ -409,6 +404,11 @@ public class VehicleEntity extends Entity {
         }
     }
 
+    private void playLowHealthParticle(ServerLevel serverLevel) {
+        ParticleTool.sendParticle(serverLevel, ParticleTypes.LARGE_SMOKE, this.getX(), this.getY() + 0.7f * getBbHeight(), this.getZ(), 1, 0.35 * this.getBbWidth(), 0.15 * this.getBbHeight(), 0.35 * this.getBbWidth(), 0.01, true);
+        ParticleTool.sendParticle(serverLevel, ParticleTypes.CAMPFIRE_COSY_SMOKE, this.getX(), this.getY() + 0.7f * getBbHeight(), this.getZ(), 1, 0.35 * this.getBbWidth(), 0.15 * this.getBbHeight(), 0.35 * this.getBbWidth(), 0.01, true);
+    }
+
     public void destroy() {
     }
 
diff --git a/src/main/java/com/atsuishio/superbwarfare/entity/vehicle/Yx100Entity.java b/src/main/java/com/atsuishio/superbwarfare/entity/vehicle/Yx100Entity.java
index 7cf5bccbd..2cdf69a65 100644
--- a/src/main/java/com/atsuishio/superbwarfare/entity/vehicle/Yx100Entity.java
+++ b/src/main/java/com/atsuishio/superbwarfare/entity/vehicle/Yx100Entity.java
@@ -7,7 +7,10 @@ import com.atsuishio.superbwarfare.entity.projectile.CannonShellEntity;
 import com.atsuishio.superbwarfare.entity.vehicle.damage.DamageModifier;
 import com.atsuishio.superbwarfare.init.*;
 import com.atsuishio.superbwarfare.network.message.ShakeClientMessage;
-import com.atsuishio.superbwarfare.tools.*;
+import com.atsuishio.superbwarfare.tools.CustomExplosion;
+import com.atsuishio.superbwarfare.tools.EntityFindUtil;
+import com.atsuishio.superbwarfare.tools.ParticleTool;
+import com.atsuishio.superbwarfare.tools.SoundTool;
 import com.mojang.math.Axis;
 import net.minecraft.core.BlockPos;
 import net.minecraft.core.particles.ParticleTypes;
@@ -30,12 +33,13 @@ import net.minecraft.world.entity.EntityType;
 import net.minecraft.world.entity.LivingEntity;
 import net.minecraft.world.entity.MoverType;
 import net.minecraft.world.entity.player.Player;
-import net.minecraft.world.item.ItemStack;
+import net.minecraft.world.item.Item;
 import net.minecraft.world.level.Explosion;
 import net.minecraft.world.level.Level;
 import net.minecraft.world.level.block.state.BlockState;
 import net.minecraft.world.phys.AABB;
 import net.minecraft.world.phys.Vec3;
+import net.minecraftforge.event.ForgeEventFactory;
 import net.minecraftforge.network.NetworkHooks;
 import net.minecraftforge.network.PacketDistributor;
 import net.minecraftforge.network.PlayMessages;
@@ -110,14 +114,14 @@ public class Yx100Entity extends ContainerMobileVehicleEntity implements GeoEnti
     public void addAdditionalSaveData(CompoundTag compound) {
         super.addAdditionalSaveData(compound);
         compound.putInt("LoadedAmmo", this.entityData.get(LOADED_AMMO));
-        compound.putInt("WeaponType", this.entityData.get(WEAPON_TYPE));
+        compound.putInt("WeaponType", getWeaponType());
     }
 
     @Override
     public void readAdditionalSaveData(CompoundTag compound) {
         super.readAdditionalSaveData(compound);
         this.entityData.set(LOADED_AMMO, compound.getInt("LoadedAmmo"));
-        this.entityData.set(WEAPON_TYPE, compound.getInt("WeaponType"));
+        setWeaponType(compound.getInt("WeaponType"));
     }
 
     @Override
@@ -240,38 +244,32 @@ public class Yx100Entity extends ContainerMobileVehicleEntity implements GeoEnti
         this.refreshDimensions();
     }
 
+    private Item getCurrentAmmoItem() {
+        return switch (getWeaponType()) {
+            case 0 -> ModItems.AP_5_INCHES.get();
+            case 1 -> ModItems.HE_5_INCHES.get();
+            default -> throw new IllegalStateException("Unexpected value: " + getWeaponType());
+        };
+    }
+
     private void handleAmmo() {
         if (!(this.getFirstPassenger() instanceof Player player)) return;
 
-        int ammoCount = this.getItemStacks().stream().filter(stack -> {
-            if (stack.is(ModItems.AMMO_BOX.get())) {
-                return AmmoType.RIFLE.get(stack) > 0;
-            }
-            return false;
-        }).mapToInt(AmmoType.RIFLE::get).sum()
-                + this.getItemStacks().stream().filter(stack -> stack.is(ModItems.RIFLE_AMMO.get())).mapToInt(ItemStack::getCount).sum();
-
         boolean hasCreativeAmmo = player.getInventory().hasAnyMatching(s -> s.is(ModItems.CREATIVE_AMMO_BOX.get()));
 
         if (hasCreativeAmmo) {
             this.entityData.set(AMMO, 9999);
-        } else if (this.getEntityData().get(WEAPON_TYPE) == 0) {
-            this.entityData.set(AMMO, this.getItemStacks().stream().filter(stack -> stack.is(ModItems.AP_5_INCHES.get())).mapToInt(ItemStack::getCount).sum());
-        } else if (this.getEntityData().get(WEAPON_TYPE) == 1) {
-            this.entityData.set(AMMO, this.getItemStacks().stream().filter(stack -> stack.is(ModItems.HE_5_INCHES.get())).mapToInt(ItemStack::getCount).sum());
+        } else {
+            this.entityData.set(AMMO, countItem(getCurrentAmmoItem()));
         }
 
-        if (this.getEntityData().get(LOADED_AMMO) == 0 && reloadCoolDown <= 0) {
-            if (this.getEntityData().get(WEAPON_TYPE) == 0 && (this.getItemStacks().stream().filter(stack -> stack.is(ModItems.AP_5_INCHES.get())).mapToInt(ItemStack::getCount).sum() > 0 || hasCreativeAmmo)) {
-                this.entityData.set(LOADED_AMMO, 1);
-                if (!hasCreativeAmmo) {
-                    this.getItemStacks().stream().filter(stack -> stack.is(ModItems.AP_5_INCHES.get())).findFirst().ifPresent(stack -> stack.shrink(1));
-                }
-            } else if (this.getEntityData().get(WEAPON_TYPE) == 1 && (this.getItemStacks().stream().filter(stack -> stack.is(ModItems.HE_5_INCHES.get())).mapToInt(ItemStack::getCount).sum() > 0 || hasCreativeAmmo)) {
-                this.entityData.set(LOADED_AMMO, 1);
-                if (!hasCreativeAmmo) {
-                    this.getItemStacks().stream().filter(stack -> stack.is(ModItems.HE_5_INCHES.get())).findFirst().ifPresent(stack -> stack.shrink(1));
-                }
+        if (this.getEntityData().get(LOADED_AMMO) == 0
+                && reloadCoolDown <= 0
+                && (hasCreativeAmmo || countItem(getCurrentAmmoItem()) > 0)
+        ) {
+            this.entityData.set(LOADED_AMMO, 1);
+            if (!hasCreativeAmmo) {
+                consumeItem(getCurrentAmmoItem(), 1);
             }
         }
     }
@@ -286,27 +284,22 @@ public class Yx100Entity extends ContainerMobileVehicleEntity implements GeoEnti
 
     @Override
     public void vehicleShoot(Player player) {
-        if (reloadCoolDown > 0) {
-            return;
-        }
+        if (reloadCoolDown > 0) return;
 
         Matrix4f transform = getBarrelTransform();
-        float hitDamage = 0;
-        float explosionRadius = 0;
-        float explosionDamage = 0;
-        float fireProbability = 0;
-        int fireTime = 0;
-        int durability = 0;
-        float v = 0;
+        float hitDamage, explosionRadius, explosionDamage, fireProbability;
+        int fireTime, durability;
+        float v;
 
-        if (entityData.get(WEAPON_TYPE) == 0) {
+        if (getWeaponType() == 0) {
             hitDamage = 500;
             explosionRadius = 4;
             explosionDamage = 100;
             fireProbability = 0;
+            fireTime = 0;
             durability = 60;
             v = 40;
-        } else if (entityData.get(WEAPON_TYPE) == 1) {
+        } else if (getWeaponType() == 1) {
             hitDamage = 100;
             explosionRadius = 10;
             explosionDamage = 150;
@@ -314,6 +307,8 @@ public class Yx100Entity extends ContainerMobileVehicleEntity implements GeoEnti
             fireTime = 2;
             durability = 1;
             v = 25;
+        } else {
+            throw new IllegalStateException("Unexpected value: " + getWeaponType());
         }
 
         Vector4f worldPosition = transformPosition(transform, 0, 0, 0);
@@ -350,7 +345,7 @@ public class Yx100Entity extends ContainerMobileVehicleEntity implements GeoEnti
         }
     }
 
-    public final Vec3 getBarrelVector(float pPartialTicks) {
+    public Vec3 getBarrelVector(float pPartialTicks) {
         return this.calculateViewVector(this.getBarrelXRot(pPartialTicks), this.getBarrelYRot(pPartialTicks));
     }
 
@@ -435,7 +430,6 @@ public class Yx100Entity extends ContainerMobileVehicleEntity implements GeoEnti
         diffY = Mth.wrapDegrees(gunAngle - getTurretYRot() + 0.05f);
         diffX = Mth.wrapDegrees(driver.getXRot() - this.getTurretXRot());
 
-
         this.setTurretXRot(Mth.clamp(this.getTurretXRot() + Mth.clamp(0.95f * diffX, -5, 5), -30f, 4f));
         this.setTurretYRot(this.getTurretYRot() + Mth.clamp(0.95f * diffY, -8, 8));
     }
@@ -579,7 +573,7 @@ public class Yx100Entity extends ContainerMobileVehicleEntity implements GeoEnti
                     ModDamageTypes.causeProjectileBoomDamage(this.level().registryAccess(), attacker, attacker), 80f,
                     this.getX(), this.getY(), this.getZ(), 5f, ExplosionConfig.EXPLOSION_DESTROY.get() ? Explosion.BlockInteraction.DESTROY : Explosion.BlockInteraction.KEEP).setDamageMultiplier(1);
             explosion.explode();
-            net.minecraftforge.event.ForgeEventFactory.onExplosionStart(this.level(), explosion);
+            ForgeEventFactory.onExplosionStart(this.level(), explosion);
             explosion.finalizeExplosion(false);
             ParticleTool.spawnMediumExplosionParticles(this.level(), this.position());
         }
@@ -682,12 +676,7 @@ public class Yx100Entity extends ContainerMobileVehicleEntity implements GeoEnti
     @Override
     public void changeWeapon(int scroll) {
         if (entityData.get(LOADED_AMMO) > 0) {
-            if (entityData.get(WEAPON_TYPE) == 0) {
-                this.getItemStacks().stream().filter(stack -> stack.is(ModItems.AP_5_INCHES.get())).findFirst().ifPresent(stack -> stack.grow(1));
-            } else if (entityData.get(WEAPON_TYPE) == 1) {
-                this.getItemStacks().stream().filter(stack -> stack.is(ModItems.HE_5_INCHES.get())).findFirst().ifPresent(stack -> stack.grow(1));
-            }
-
+            this.insertItem(getCurrentAmmoItem(), 1);
             entityData.set(LOADED_AMMO, 0);
         }
 
@@ -698,8 +687,8 @@ public class Yx100Entity extends ContainerMobileVehicleEntity implements GeoEnti
             player.connection.send(clientboundstopsoundpacket);
         }
 
-        var type = (entityData.get(WEAPON_TYPE) + scroll + 2) % 2;
-        entityData.set(WEAPON_TYPE, type);
+        var type = (getWeaponType() + scroll + 2) % 2;
+        setWeaponType(type);
 
         var sound = switch (type) {
             case 0 -> ModSounds.INTO_MISSILE.get();
@@ -714,6 +703,11 @@ public class Yx100Entity extends ContainerMobileVehicleEntity implements GeoEnti
         return entityData.get(WEAPON_TYPE);
     }
 
+    @Override
+    public void setWeaponType(int type) {
+        entityData.set(WEAPON_TYPE, type);
+    }
+
     @Override
     public ResourceLocation getVehicleIcon() {
         return ModUtils.loc("textures/vehicle_icon/bmp2_icon.png");
diff --git a/src/main/java/com/atsuishio/superbwarfare/entity/vehicle/Yx100GunEntity.java b/src/main/java/com/atsuishio/superbwarfare/entity/vehicle/Yx100GunEntity.java
index bb524115e..361d2e874 100644
--- a/src/main/java/com/atsuishio/superbwarfare/entity/vehicle/Yx100GunEntity.java
+++ b/src/main/java/com/atsuishio/superbwarfare/entity/vehicle/Yx100GunEntity.java
@@ -18,7 +18,6 @@ import net.minecraft.world.InteractionResult;
 import net.minecraft.world.entity.Entity;
 import net.minecraft.world.entity.EntityType;
 import net.minecraft.world.entity.player.Player;
-import net.minecraft.world.item.ItemStack;
 import net.minecraft.world.level.Level;
 import net.minecraftforge.network.NetworkHooks;
 import net.minecraftforge.network.PlayMessages;
@@ -101,8 +100,7 @@ public class Yx100GunEntity extends VehicleEntity implements GeoEntity, ICannonE
                     return AmmoType.HEAVY.get(stack) > 0;
                 }
                 return false;
-            }).mapToInt(AmmoType.HEAVY::get).sum()
-                    + yx100.getItemStacks().stream().filter(stack -> stack.is(ModItems.HEAVY_AMMO.get())).mapToInt(ItemStack::getCount).sum();
+            }).mapToInt(AmmoType.HEAVY::get).sum() + yx100.countItem(ModItems.HEAVY_AMMO.get());
 
 
             this.entityData.set(AMMO, ammoCount);