diff --git a/server/gameserver/constant.h b/server/gameserver/constant.h
index e2ce0cc..f7b37fd 100755
--- a/server/gameserver/constant.h
+++ b/server/gameserver/constant.h
@@ -166,6 +166,7 @@ enum HumanAttrType_e
     kHAT_FireRate = 9,
     kHAT_Volume = 10,
     kHAT_MaxHp = 11,
+    kHAT_ReloadTime = 14,
     kHAT_BulletAngle = 20,
     kHAT_End
 };
diff --git a/server/gameserver/human.cc b/server/gameserver/human.cc
index 8457009..1b9349a 100644
--- a/server/gameserver/human.cc
+++ b/server/gameserver/human.cc
@@ -829,7 +829,7 @@ void Human::AutoLoadingBullet(bool manual)
                     on_loading_bullet();
                 }
                 StartAction(AT_Reload,
-                            p_weapon->meta->i->reload_time(),
+                            p_weapon->GetAttrValue(kHAT_ReloadTime),
                             p_weapon->weapon_id,
                             p_weapon->weapon_idx);
             }
@@ -848,6 +848,7 @@ void Human::StartAction(ActionType_e action_type,
         this->action_target_id == target_id) {
         return;
     }
+    action_duration = std::max(0, action_duration);
     this->action_type = action_type;
     this->action_frameno = room->GetFrameNo();
     this->action_duration = action_duration;
diff --git a/server/gameserver/types.cc b/server/gameserver/types.cc
index 6065e3a..8e5f606 100644
--- a/server/gameserver/types.cc
+++ b/server/gameserver/types.cc
@@ -57,6 +57,12 @@ float Weapon::GetAttrValue(HumanAttrType_e attr_type)
                 (upgrade_meta ? upgrade_meta->GetAttrValue(weapon_lv, attr_type) : 0);
         }
         break;
+    case kHAT_ReloadTime:
+        {
+            return meta->i->reload_time() -
+                (upgrade_meta ? upgrade_meta->GetAttrValue(weapon_lv, attr_type) : 0);
+        }
+        break;
     default:
         return 0;
     }