diff --git a/server/gameserver/buff/callfunc.cc b/server/gameserver/buff/callfunc.cc
index 380ab247..8864a272 100644
--- a/server/gameserver/buff/callfunc.cc
+++ b/server/gameserver/buff/callfunc.cc
@@ -95,6 +95,11 @@ void CallFuncBuff::Activate()
             ProcSyncProp();
         }
         break;
+    case BuffCallFunc_e::kSetBulletBornOffset:
+        {
+            owner->GetCurrWeapon()->bullet_born_offset_ptr = &meta->_bullet_born_offset;
+        }
+        break;
     default:
         {
         }
@@ -113,6 +118,11 @@ void CallFuncBuff::Deactivate()
             }
         }
         break;
+    case BuffCallFunc_e::kSetBulletBornOffset:
+        {
+            owner->GetCurrWeapon()->bullet_born_offset_ptr = nullptr;
+        }
+        break;
     default:
         {
         }
diff --git a/server/gameserver/buff/callfunc.h b/server/gameserver/buff/callfunc.h
index 89a30dab..5745833b 100644
--- a/server/gameserver/buff/callfunc.h
+++ b/server/gameserver/buff/callfunc.h
@@ -13,7 +13,8 @@ A8_DECLARE_CLASS_ENUM(BuffCallFunc_e, int,
                       kAddHp = 11,
                       kFlashMoveToPos = 12,
                       kLightCircle = 13,
-                      kSyncProp = 16
+                      kSyncProp = 16,
+                      kSetBulletBornOffset = 17
                       );
 
 
diff --git a/server/gameserver/weapon.h b/server/gameserver/weapon.h
index 1d0fceec..83ec0d34 100644
--- a/server/gameserver/weapon.h
+++ b/server/gameserver/weapon.h
@@ -18,6 +18,7 @@ class Weapon
     const mt::Equip* meta = nullptr;
     const mt::Equip* bullet_meta = nullptr;
     const mt::Skill* skill_meta = nullptr;
+    const std::vector<std::tuple<float, float, float, int, int, int>>* bullet_born_offset_ptr = nullptr;
 
     void Clear();
     void ToPB(Creature* c, cs::MFWeapon* pb_obj);