The tactical mil-spec stock is scompatible with mil-spec buffer tubes.It features a sleek design with metal qd base on each side for qd slings and several molded in 1.5 sling loops.An integrated rubber butt pad for non-slip secure shouldering comfort and recoil mitigation.This stock also features a unique latch mechanism first click for adjusting stock position and a second full click for mounting/demounting from the buffer tube.Tube Included: No