Your Price: $66.00
In Stock.
Part Number:ESF-H

Choose Options

ESF-H Color
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.

As is our practice, ESF’s shape is dictated by its functions.  In order to accommodate the rear facing socket, and fill one of the design requirements that ESF must be able to use stakable castle nuts and allow the carbine stock to fully collapse, ESF has a slight increase in width on the sides, and small openings on the top of the sockets housing.  These design cues do not affect ESF’s structural integrity, and mostly go unnoticed by users, they merely reflect a paradox, that it can be quite complicated to create a simplified design.  A seemingly simple product can often be more than meets the eye.
Aesthetics were never a part of the stated objectives for ESF.  Nonetheless, ESF, like similar products before it, effectively lengthens the carbine receiver’s rear and gives it a silhouette reminiscent of the classic AR10/SR25.  We’ve long considered the AR carbine’s rear seems to be abruptly terminated, which leaves a gap between the end plate and the carbine’s retractable stock.  ESF fills the void and, the classic AR15/M16 lines flow far better with it.  Even though we take a dim view of fashion firearms and components, we can still appreciate aesthetics, especially if they stem from the design’s functions.


End plates that incorporate side facing QD swivel sockets can mask available wrench notches required for torquing.  A conventional castle nut wrench has 3 lugs, in some cases, the socket housing may partially block access to one of them.  A 2 lug castle nut wrench, such as the AR Multitasker, or our JCW (Joint Castle nut Wrench) would be required to torque the castle nut properly.

ESF does not ship with CNF (castle nut).

Weight: 1.12 oz
Material: 4140
Made in USA

5 Stars
Gear Connoisseur
Man, you wouldn't think a lower receiver back plate could be such a big deal, but it's one of those you don't know until you know type situations. I am always on the lookout for cool new innovative designs for my AR platforms, these are a huge step up from anything else available that I have seen. These will be going on all of my current and future builds, no doubt. Brilliant, simple, and stout. Love it!
Did you find this helpful?  7 of 7 Found Helpful
Reviewed by: (Verified Buyer)  from Texas. on 4/20/2020
5 Stars
Gold Standard for end plates
gold standard for end plates period! strong, 3 QD options, sopmod stocks fit perfect with it and they look appropriate
Did you find this helpful?  1 of 1 Found Helpful
Reviewed by: (Verified Buyer)  from Mizzou. on 5/18/2022
5 Stars
Couldn't ask for a better design
A fee years back I started seeing everyone talking about these "duck parts" I didn't think to much about it at the time. Fast-forward to my first purchase of FCD about a month ago, and I am sold! Absolutely love this end plate. I have the castle nut, buffer detent, takedown pins, and bolt catch on 2 of my builds. I will always go with FCD for any future builds. Function over fashion. A great company model and a brilliant way to make the best functioning rifle!! Life long customer here!
Did you find this helpful?  1 of 1 Found Helpful
Reviewed by: (Verified Buyer)  from Granite Falls. on 9/7/2021

Related Items


Recently Viewed Items