With no extra tools necessary, attach the mount to any gun barrel that is 18-23mm in diameter for a secure fit. For use with most of Fenix flashlights that have a body diameter of 23,5-28 mm. Tool-free assembly and disassembly Made of A6061-T6 aluminum Premium type HAIII hard-anodized anti-abrasive finish Fits weapon barrel with diameters of 18 mm - 23 mm Compatible with flashlight body diameters of 23,5 - 28 mm and a head less than 70mm
Note: If this is used on a barrel with high volume rounds, the heat of the barrel will require you to remove the rubber cushions before using to avoid the rubber from melting.