Lua无限弹药问题。！！

ˊ射ī扌唑？

-- Infinite Ammo Clip
if not _fireWep then
   _fireWep = NewRaycastWeaponBase.fire
end
function NewRaycastWeaponBase:fire( from_pos, direction, dmg_mul, shoot_player, spread_mul, autohit_mul, suppr_mul, target_unit )
   _fireWep( self, from_pos, direction, dmg_mul, shoot_player, spread_mul, autohit_mul, suppr_mul, target_unit )

   if managers.player:player_unit() == self._setup.user_unit then
      self.set_ammo(self, 1.0)
   end
end

这个是无限弹药和武器无后坐力。怎么去除武器无后坐力功能。只是单纯想要无限弹药。而且用了这个代码感觉武器射速和伤害也提高了。求大神帮助！！！