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.  SOPMOD and B5 Systems Bravo stocks will fully collapse with a rear facing QD swivel installed, other carbine stocks must be closed on the #2 position on the RE (#1 position being fully closed) if a rear facing QD swivel is present.

ESF is available in  4140 steel, DLC or phosphate coated ESF-H (3 sockets) and Cerakoted versions.  ESF-H has rotation limited side facing sockets.  The rear facing socket has no limiters, as the receiver extension effectively limits the swivel’s rotation.

ESF-H is no light weight at 1.1oz.  Our 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.  Our concern with weight is only limited to keeping our designs as close to TDP weight as possible.  There isn’t a TDP equivalent for the ESF, and the 4140 ESF-H’s weight is centered on the AR, it will not cause the weapon to be front or rear heavy, thus we deem its heft to be acceptable, given its immense strength.