FCD ESF (End plate, Sling Adapter, Forward Controls Design) is a drop in end plate replacement for the AR platform (both 223 and 308 spec). Featuring three quick detach sling swivel sockets (two side, and one rear facing), when used in conjunction with a castle nut, ESF will allow retractable carbine stocks to fully collapse.
Coming in at 1.1oz, FCD’s design philosophy focuses on utility, simplicity, and durability. 4140 ESF-H is heavy, because it is practically bomb proof, and will outlast the 7075 aluminum receivers. Ensuring that you have a solid anchor to keep your sling and buffer tube in place.