Golgy a Sunday Gamer, tries the Begadi Spitfire MK2 Tracer Unit in this video review. The Spitfire MK2 has a solid aluminum housing with a 14mm CCW thread and an 11mm CW thread adapter for use on most airsoft guns. It features separate tracer and flame modules, with the flame function available in 11 colors/modes. The tracer module illuminates green Tracer BBs. The built-in Li-Ion battery allows for up to 25000 BBs to be fired at a maximum rate of 35 BBs/second.