Gen surefire flashlight attachment, a gift from a serviceman and have had it mounted a few times but don't use nods or play at night enough to make the most out of such a great bit of kit. Obviously the majority of the price point on this is the head as it has a infrared mode. Feel free to tally up the price on the surefire website to see how much the parts would cost brand new and you will see how much of a bargain this is, condition is like new, no damage what so ever and works perfectly, I'm selling but also happy to trade for a KWA Mp9 a1 (black).