diff --git a/server/gameserver/creature.cc b/server/gameserver/creature.cc
index e9f5b08..d9dc80f 100644
--- a/server/gameserver/creature.cc
+++ b/server/gameserver/creature.cc
@@ -13,6 +13,77 @@
 #include "trigger.h"
 #include "car.h"
 
+struct BulletInfo
+{
+    CreatureWeakPtr c;
+    MetaData::Equip* weapon_meta = nullptr;
+    MetaData::EquipUpgrade* weapon_upgrade_meta = nullptr;
+    MetaData::Equip* bullet_meta = nullptr;
+    a8::Vec2 bullet_born_pos;
+    a8::Vec2 bullet_dir;
+    float fly_distance = 0;
+    bool is_tank_skin = false;
+    int weapon_lv = 0;
+    int delay_time = 0;
+};
+
+static void InternalCreateBullet(BulletInfo& bullet_info)
+{
+    if (!bullet_info.c.Get()) {
+        return;
+    }
+    if (bullet_info.delay_time <= 0) {
+        int bullet_uniid = 0;
+        Creature* c = bullet_info.c.Get();
+        if (c->room->BattleStarted() ||
+            (c->room->GetGasData().gas_mode == GasJump &&
+             !c->HasBuffEffect(kBET_Jump))) {
+            bullet_uniid = c->room->CreateBullet
+                (c,
+                 c->shot_passenger,
+                 bullet_info.weapon_meta,
+                 bullet_info.weapon_upgrade_meta,
+                 bullet_info.bullet_meta,
+                 bullet_info.bullet_born_pos,
+                 bullet_info.bullet_dir,
+                 bullet_info.fly_distance,
+                 bullet_info.is_tank_skin);
+        }
+        if (bullet_uniid == 0) {
+            bullet_uniid = c->room->AllocUniid();
+        }
+        c->room->frame_event.AddBullet
+            (bullet_uniid,
+             c->GetWeakPtrRef(),
+             bullet_info.weapon_meta,
+             bullet_info.weapon_lv,
+             bullet_info.bullet_born_pos,
+             bullet_info.bullet_dir,
+             bullet_info.fly_distance);
+    } else {
+        BulletInfo* info_copy = new BulletInfo();
+        *info_copy = bullet_info;
+        bullet_info.c.Get()->room->xtimer.AddDeadLineTimerAndAttach
+            (
+             bullet_info.delay_time / FRAME_RATE_MS,
+             a8::XParams()
+             .SetSender(info_copy),
+             [] (const a8::XParams& param)
+             {
+                 BulletInfo* info_copy = (BulletInfo*)param.sender.GetUserData();
+                 info_copy->delay_time = 0;
+                 InternalCreateBullet(*info_copy);
+             },
+             &bullet_info.c.Get()->xtimer_attacher.timer_list_,
+             [] (const a8::XParams& param)
+             {
+                 BulletInfo* info_copy = (BulletInfo*)param.sender.GetUserData();
+                 delete info_copy;
+             }
+             );
+    }
+}
+
 void InternalShot(Creature* c,
                   MetaData::Equip* weapon_meta,
                   MetaData::EquipUpgrade* weapon_upgrade_meta,
@@ -60,31 +131,20 @@ void InternalShot(Creature* c,
             }
         }
         bullet_dir.Rotate(bullet_angle / 180.0f);
-        int bullet_uniid = 0;
-        if (c->room->BattleStarted() ||
-            (c->room->GetGasData().gas_mode == GasJump &&
-             !c->HasBuffEffect(kBET_Jump))) {
-            bullet_uniid = c->room->CreateBullet
-                (c,
-                 c->shot_passenger,
-                 weapon_meta,
-                 weapon_upgrade_meta,
-                 bullet_meta,
-                 bullet_born_pos,
-                 bullet_dir,
-                 fly_distance,
-                 is_tank_skin);
+        {
+            BulletInfo bullet_info;
+            bullet_info.c = c->GetWeakPtrRef();
+            bullet_info.weapon_meta = weapon_meta;
+            bullet_info.weapon_upgrade_meta = weapon_upgrade_meta;
+            bullet_info.bullet_meta = bullet_meta;
+            bullet_info.bullet_born_pos = bullet_born_pos;
+            bullet_info.bullet_dir = bullet_dir;
+            bullet_info.fly_distance = fly_distance;
+            bullet_info.is_tank_skin = is_tank_skin;
+            bullet_info.weapon_lv = weapon_lv;
+            bullet_info.delay_time = std::get<3>(tuple);
+            InternalCreateBullet(bullet_info);
         }
-        if (bullet_uniid == 0) {
-            bullet_uniid = c->room->AllocUniid();
-        }
-        c->room->frame_event.AddBullet(bullet_uniid,
-                                       c->GetWeakPtrRef(),
-                                       weapon_meta,
-                                       weapon_lv,
-                                       bullet_born_pos,
-                                       bullet_dir,
-                                       fly_distance);
     }
     c->GetTrigger()->Shot(weapon_meta);
     if (weapon_meta->i->recoil_force() > 0.000001) {
diff --git a/server/gameserver/metadata.cc b/server/gameserver/metadata.cc
index 21cba3a..e554a7e 100644
--- a/server/gameserver/metadata.cc
+++ b/server/gameserver/metadata.cc
@@ -189,12 +189,14 @@ namespace MetaData
                 std::vector<std::string> strings2;
                 a8::Split(str, strings2, ':');
                 assert(strings2.size() >= 2);
-                bullet_born_offset.push_back(std::make_tuple(
-                                                             a8::XValue(strings2[0]).GetDouble(),
-                                                             a8::XValue(strings2[1]).GetDouble(),
-                                                             strings2.size() > 2 ? a8::XValue(strings2[2]).GetDouble() : 0
-                                                             )
-                                             );
+                bullet_born_offset.push_back
+                    (std::make_tuple(
+                                     a8::XValue(strings2[0]).GetDouble(),
+                                     a8::XValue(strings2[1]).GetDouble(),
+                                     strings2.size() > 2 ? a8::XValue(strings2[2]).GetDouble() : 0,
+                                     strings2.size() > 3 ? a8::XValue(strings2[3]).GetInt() : 0
+                                     )
+                     );
             }
         }
         {
diff --git a/server/gameserver/metadata.h b/server/gameserver/metadata.h
index e3c96da..d9a7e49 100644
--- a/server/gameserver/metadata.h
+++ b/server/gameserver/metadata.h
@@ -72,7 +72,7 @@ namespace MetaData
     {
         const metatable::Equip* i = nullptr;
 
-        std::vector<std::tuple<float, float, float>> bullet_born_offset;
+        std::vector<std::tuple<float, float, float, int>> bullet_born_offset;
         std::vector<std::tuple<int, a8::Vec2>> shoot_offsets;
         std::array<int, IS_END> volume = {};
         int int_param1 = 0;