US Tactical Systems M16 AR15 Carry Handle AR Scope Mount M16/AR15 Mount also fits all detachable carry handle models Constructed from from 357 aluminum For strength and a light-weight feel Accepts NATO STANAG and Weaver type scopes and rings Wire -EDM precision machined to the tightest tolerances possible to maintain repeated scope zero everytime Unique self-locking thumbnut that fits snugly on the carry handle. - Best choice in the industry!