The G&G Battle Owl Pistol Tracer Unit – Black. This is a 12mm CCW threaded tracer unit, so it will not work on most airsoft guns. This is for airsoft pistols that use 12mm CCW only (will not work on 14mm).
Fully rechargeable via USB (built-in battery) tracer unit. Use with glow in the dark BBs for awesome effects. Power on/off switch. All black, metal construction. Very compact and lightweight, specifically made for pistols. Around 5.3 inches in length.