diff --git a/src/generated/resources/.cache/9fb1092f32d4fcbf9e061ffd718d4ec689c6c95e b/src/generated/resources/.cache/9fb1092f32d4fcbf9e061ffd718d4ec689c6c95e
index d19f735ba..d19e3ba7e 100644
--- a/src/generated/resources/.cache/9fb1092f32d4fcbf9e061ffd718d4ec689c6c95e
+++ b/src/generated/resources/.cache/9fb1092f32d4fcbf9e061ffd718d4ec689c6c95e
@@ -1,2 +1,3 @@
-// 1.20.1	2025-02-22T22:55:11.4694739	Recipes
+// 1.20.1	2025-03-11T20:08:33.5240751	Recipes
+9775e550332c69f1ee2ac4a09834a35db6f6a2ed data/minecraft/recipes/ammo_box_add_ammo.json
 2e1d1bbf32801f3d355c0d3f78ebbb1122cebd4c data/minecraft/recipes/potion_mortar_shell.json
diff --git a/src/generated/resources/data/minecraft/recipes/ammo_box_add_ammo.json b/src/generated/resources/data/minecraft/recipes/ammo_box_add_ammo.json
new file mode 100644
index 000000000..951d4afac
--- /dev/null
+++ b/src/generated/resources/data/minecraft/recipes/ammo_box_add_ammo.json
@@ -0,0 +1,4 @@
+{
+  "type": "superbwarfare:ammo_box_add_ammo",
+  "category": "misc"
+}
\ No newline at end of file
diff --git a/src/main/java/com/atsuishio/superbwarfare/datagen/ModRecipeProvider.java b/src/main/java/com/atsuishio/superbwarfare/datagen/ModRecipeProvider.java
index 2deed6a56..a5d4fec21 100644
--- a/src/main/java/com/atsuishio/superbwarfare/datagen/ModRecipeProvider.java
+++ b/src/main/java/com/atsuishio/superbwarfare/datagen/ModRecipeProvider.java
@@ -6,6 +6,7 @@ import net.minecraft.data.recipes.FinishedRecipe;
 import net.minecraft.data.recipes.RecipeProvider;
 import net.minecraft.data.recipes.SpecialRecipeBuilder;
 import net.minecraftforge.common.crafting.conditions.IConditionBuilder;
+import org.jetbrains.annotations.NotNull;
 
 import java.util.function.Consumer;
 
@@ -16,7 +17,8 @@ public class ModRecipeProvider extends RecipeProvider implements IConditionBuild
     }
 
     @Override
-    protected void buildRecipes(Consumer<FinishedRecipe> pWriter) {
+    protected void buildRecipes(@NotNull Consumer<FinishedRecipe> pWriter) {
         SpecialRecipeBuilder.special(ModRecipes.POTION_MORTAR_SHELL_SERIALIZER.get()).save(pWriter, "potion_mortar_shell");
+        SpecialRecipeBuilder.special(ModRecipes.AMMO_BOX_ADD_AMMO_SERIALIZER.get()).save(pWriter, "ammo_box_add_ammo");
     }
 }
diff --git a/src/main/java/com/atsuishio/superbwarfare/init/ModRecipes.java b/src/main/java/com/atsuishio/superbwarfare/init/ModRecipes.java
index 53db9d365..39102c59c 100644
--- a/src/main/java/com/atsuishio/superbwarfare/init/ModRecipes.java
+++ b/src/main/java/com/atsuishio/superbwarfare/init/ModRecipes.java
@@ -1,6 +1,7 @@
 package com.atsuishio.superbwarfare.init;
 
 import com.atsuishio.superbwarfare.ModUtils;
+import com.atsuishio.superbwarfare.recipe.AmmoBoxAddAmmoRecipe;
 import com.atsuishio.superbwarfare.recipe.PotionMortarShellRecipe;
 import net.minecraft.world.item.crafting.RecipeSerializer;
 import net.minecraft.world.item.crafting.SimpleCraftingRecipeSerializer;
@@ -14,4 +15,7 @@ public class ModRecipes {
 
     public static final RegistryObject<RecipeSerializer<PotionMortarShellRecipe>> POTION_MORTAR_SHELL_SERIALIZER =
             RECIPE_SERIALIZERS.register("potion_mortar_shell", () -> new SimpleCraftingRecipeSerializer<>(PotionMortarShellRecipe::new));
+
+    public static final RegistryObject<RecipeSerializer<AmmoBoxAddAmmoRecipe>> AMMO_BOX_ADD_AMMO_SERIALIZER =
+            RECIPE_SERIALIZERS.register("ammo_box_add_ammo", () -> new SimpleCraftingRecipeSerializer<>(AmmoBoxAddAmmoRecipe::new));
 }
diff --git a/src/main/java/com/atsuishio/superbwarfare/recipe/AmmoBoxAddAmmoRecipe.java b/src/main/java/com/atsuishio/superbwarfare/recipe/AmmoBoxAddAmmoRecipe.java
new file mode 100644
index 000000000..cd6e0fd39
--- /dev/null
+++ b/src/main/java/com/atsuishio/superbwarfare/recipe/AmmoBoxAddAmmoRecipe.java
@@ -0,0 +1,81 @@
+package com.atsuishio.superbwarfare.recipe;
+
+import com.atsuishio.superbwarfare.init.ModRecipes;
+import com.atsuishio.superbwarfare.item.common.ammo.AmmoBox;
+import com.atsuishio.superbwarfare.item.common.ammo.AmmoSupplierItem;
+import com.atsuishio.superbwarfare.tools.AmmoType;
+import net.minecraft.core.RegistryAccess;
+import net.minecraft.resources.ResourceLocation;
+import net.minecraft.world.inventory.CraftingContainer;
+import net.minecraft.world.item.ItemStack;
+import net.minecraft.world.item.crafting.CraftingBookCategory;
+import net.minecraft.world.item.crafting.CustomRecipe;
+import net.minecraft.world.item.crafting.RecipeSerializer;
+import net.minecraft.world.level.Level;
+import org.jetbrains.annotations.NotNull;
+
+import java.util.HashMap;
+
+public class AmmoBoxAddAmmoRecipe extends CustomRecipe {
+
+    public AmmoBoxAddAmmoRecipe(ResourceLocation pId, CraftingBookCategory pCategory) {
+        super(pId, pCategory);
+    }
+
+    @Override
+    public boolean matches(CraftingContainer pContainer, @NotNull Level pLevel) {
+        var hasAmmoBox = false;
+        var hasAmmo = false;
+
+        for (var item : pContainer.getItems()) {
+            if (item.getItem() instanceof AmmoBox) {
+                if (hasAmmoBox) return false;
+                hasAmmoBox = true;
+            } else if (item.getItem() instanceof AmmoSupplierItem) {
+                hasAmmo = true;
+            } else if (!item.isEmpty()) {
+                return false;
+            }
+        }
+
+        return hasAmmoBox && hasAmmo;
+    }
+
+
+    private void addAmmo(HashMap<AmmoType, Integer> map, AmmoType type, int count) {
+        map.put(type, map.getOrDefault(type, 0) + count);
+    }
+
+    @Override
+    public @NotNull ItemStack assemble(CraftingContainer pContainer, @NotNull RegistryAccess pRegistryAccess) {
+        var map = new HashMap<AmmoType, Integer>();
+        var ammoBox = ItemStack.EMPTY;
+
+        for (var item : pContainer.getItems()) {
+            if (item.getItem() instanceof AmmoSupplierItem ammoSupplier) {
+                addAmmo(map, ammoSupplier.type, ammoSupplier.ammoToAdd);
+            } else if (item.getItem() instanceof AmmoBox) {
+                ammoBox = item.copy();
+                for (var type : AmmoType.values()) {
+                    addAmmo(map, type, type.get(item));
+                }
+            }
+        }
+
+        for (var type : AmmoType.values()) {
+            type.set(ammoBox, map.getOrDefault(type, 0));
+        }
+
+        return ammoBox;
+    }
+
+    @Override
+    public boolean canCraftInDimensions(int pWidth, int pHeight) {
+        return true;
+    }
+
+    @Override
+    public @NotNull RecipeSerializer<?> getSerializer() {
+        return ModRecipes.AMMO_BOX_ADD_AMMO_SERIALIZER.get();
+    }
+}