This adapter works perfectly on colt ar-15, bushmaster, armalite rifles and other ar-15 clones with round handguards.Pop off the bottom handguard, install the flange and then follow the easy instructions to attach the model of bipod you purchased and the handguard back on to the rifle.Carrying sling fits adapter or bipod clamp with qd sling swivel.Adaptor Type: Bipod AdapterType: Bipod AdapterFinish: BlackStyle: 1-PieceMaterial: Steel