diff --git a/src/main/java/com/atsuishio/superbwarfare/entity/projectile/HeliRocketEntity.java b/src/main/java/com/atsuishio/superbwarfare/entity/projectile/HeliRocketEntity.java
index 60f29bc63..5ac124edc 100644
--- a/src/main/java/com/atsuishio/superbwarfare/entity/projectile/HeliRocketEntity.java
+++ b/src/main/java/com/atsuishio/superbwarfare/entity/projectile/HeliRocketEntity.java
@@ -44,6 +44,11 @@ public class HeliRocketEntity extends FastThrowableProjectile implements GeoEnti
         this.noCulling = true;
     }
 
+    public HeliRocketEntity(EntityType<? extends ThrowableItemProjectile> pEntityType, double pX, double pY, double pZ, Level pLevel) {
+        super(pEntityType, pX, pY, pZ, pLevel);
+        this.noCulling = true;
+    }
+
     public HeliRocketEntity(LivingEntity entity, Level level, float damage, float explosionDamage, float explosionRadius) {
         super(ModEntities.HELI_ROCKET.get(), entity, level);
         this.damage = damage;
@@ -145,7 +150,7 @@ public class HeliRocketEntity extends FastThrowableProjectile implements GeoEnti
 
     @Override
     protected double getDefaultGravity() {
-        return 0.002f;
+        return 0;
     }
 
     @Override
diff --git a/src/main/java/com/atsuishio/superbwarfare/init/ModItems.java b/src/main/java/com/atsuishio/superbwarfare/init/ModItems.java
index 19e8b0a35..8fbfa867d 100644
--- a/src/main/java/com/atsuishio/superbwarfare/init/ModItems.java
+++ b/src/main/java/com/atsuishio/superbwarfare/init/ModItems.java
@@ -116,7 +116,7 @@ public class ModItems {
     public static final DeferredHolder<Item, ClaymoreMine> CLAYMORE_MINE = AMMO.register("claymore_mine", ClaymoreMine::new);
     public static final DeferredHolder<Item, C4Bomb> C4_BOMB = AMMO.register("c4_bomb", C4Bomb::new);
     public static final DeferredHolder<Item, Item> SMALL_SHELL = AMMO.register("small_shell", SmallShellItem::new);
-    public static final DeferredHolder<Item, Item> ROCKET_70 = AMMO.register("rocket_70", () -> new Item(new Item.Properties()));
+    public static final DeferredHolder<Item, Item> ROCKET_70 = AMMO.register("rocket_70", Rocket70::new);
     public static final DeferredHolder<Item, Item> WIRE_GUIDE_MISSILE = AMMO.register("wire_guide_missile", () -> new Item(new Item.Properties()));
     public static final DeferredHolder<Item, Item> SWARM_DRONE = AMMO.register("swarm_drone", () -> new Item(new Item.Properties()));
     public static final DeferredHolder<Item, BeamTest> BEAM_TEST = AMMO.register("beam_test", BeamTest::new);
diff --git a/src/main/java/com/atsuishio/superbwarfare/item/Rocket70.java b/src/main/java/com/atsuishio/superbwarfare/item/Rocket70.java
new file mode 100644
index 000000000..7aafa5522
--- /dev/null
+++ b/src/main/java/com/atsuishio/superbwarfare/item/Rocket70.java
@@ -0,0 +1,36 @@
+package com.atsuishio.superbwarfare.item;
+
+import com.atsuishio.superbwarfare.entity.projectile.HeliRocketEntity;
+import com.atsuishio.superbwarfare.init.ModEntities;
+import net.minecraft.core.Direction;
+import net.minecraft.core.Position;
+import net.minecraft.world.entity.projectile.Projectile;
+import net.minecraft.world.item.Item;
+import net.minecraft.world.item.ItemStack;
+import net.minecraft.world.item.ProjectileItem;
+import net.minecraft.world.level.Level;
+import org.jetbrains.annotations.NotNull;
+
+import javax.annotation.ParametersAreNonnullByDefault;
+
+public class Rocket70 extends Item implements ProjectileItem {
+
+    public Rocket70() {
+        super(new Properties());
+    }
+
+    @Override
+    @ParametersAreNonnullByDefault
+    public @NotNull Projectile asProjectile(Level level, Position pos, ItemStack stack, Direction direction) {
+        return new HeliRocketEntity(ModEntities.HELI_ROCKET.get(), pos.x(), pos.y(), pos.z(), level);
+    }
+
+    // TODO 发射音效
+    @Override
+    public @NotNull DispenseConfig createDispenseConfig() {
+        return DispenseConfig.builder()
+                .uncertainty(1)
+                .power(4)
+                .build();
+    }
+}
\ No newline at end of file