FCD RBF (Reinforced Buffer retainer, Forward Controls) | Forward Controls Design

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(40 customer reviews)

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RBF (Reinforced Buffer retainer, Forward Controls) is a strengthened AR buffer retainer machined with Swiss machines from 17-4 stainless steel bar stock, and heat treated to H900 hardness.  RBF features a reinforced tip that is 10% larger (0.102) than TDP spec (0.093).  We don’t want RBF to be timed (as the case with a rectangular tip), so RBF retains the TDP buffer retainer’s versatile round tip, and is installed per TM instructions.  10% is as much as we could increase before encountering receiver extension timing incompatibilities.
When all the systems in an AR function properly, one could argue is that a reinforced buffer retainer isn’t necessary.  We agree, except mix and match parts from different manufacturers and their varying adherence to TDP specs, tolerance staking is far from the exception.  Many of us have had this inexpensive part break and toss its tip into the lower receiver, usually in the trigger group and cause a jam.  RBF’s billet construction and reinforced tip aim to mitigate this, it could be viewed as cheap insurance, even if the way we make it is anything but cheap 🙂
RBF has a light bronze sheen after heat treat.  Ever practical, we do not coat or polish it, as it is stainless steel and an internal part.
RBF is compatible with AR15/M16 milspect rifle and carbine receiver extensions, as well as Vltor A5 system receiver extensions.
NOTE:
* Always wear eye protection while handling springs under pressure, spring loaded pins and detents.
* Receiver extensions (REs) timing on the receiver can vary.  While the an RE can rotate past dead center (with the RE covering and retaining the buffer retainer) by 45 degrees or more on one receiver, it might only be able to do 15 degrees or less on another.  Also, different REs have different timing values.

Additional information

Weight .5 oz
Dimensions 3 × 2 × 1 in

40 reviews for FCD RBF (Reinforced Buffer retainer, Forward Controls) | Forward Controls Design

  1. gorillastrenth (verified owner)

    Bulletproof can’t go wrong with this on all your AR-15 rifles, definitely buy from BTO with excellent customer service and super fast shipping. They might be shipping magicians or something cause I never now how it gets to me so fast. I’m sure they will never to tell how they do it I’m pretty impressed with BTO shipping abilities. Big thanks I appreciate the hard work

  2. coreymcox6 (verified owner)

    Nice little upgrade if you’re wanting to increase the longevity of your rifles recoil system. Pair this with a sprinco recoil spring and you will be set!

  3. Rjsmith (verified owner)

    No reason not to run this

  4. nathanial.wilson77 (verified owner)

    Quality retainer, worth the extra $ for the peace of mind.

  5. dcshdaigle (verified owner)

    Tried this out as an afterthought to an AR with a very weak buffer Retainer developing gashes from time to time! Had some points from BTO I neglected to use for an order and decided to use them to try this out. IT IS BOMB PROOF! Much harder than the flimsy stock Retainer that came with my RUGER

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