The Gun Mount (GM02) is a nifty little mount used to connect our 25mm torches to a firearm that has a Picatinni rail. This is common on assault rifles and even some pistols like some Glocks. The Flashlight will be inserted into the GM02 and tightened using the Allen Key, the light plus mount will then be inserted onto the firearm rail, and fastened with the round silver knob on the side of the GM02 using your hand. For a more permanent fitting, one can fasten the knob using a tool. Although this bracket has not been designed for pistols, it does work well with the P12 and MT2C when pistol mounted.