Mounts to the bottom of the Knight's Armament URX 3.0 and URX 3.1 handguard. Dimpled texture for more grip. Handstop attaches with one bolt/nut. Handstop is made of plastic, will not heat up like aluminum handstops. Does not fit picatinny rails!
Note On Colors: Tan and Taupe are Knight's Armament colors, Flat Dark Earth is a match to Magpul FDE