RBF (Reinforced Buffer retainer, Forward Controls)

[Duffy]

RBF is a beefed up buffer retainer machined in 17-4 stainless steel, and heat treated to H900. Its tip is 10% larger in diameter than that of a TDP spec buffer retainer, any bigger would risk incompatibilities with RE's timing.

http://www.forwardcontrolsdesign.com...ols_p_158.html

RBF is compatible with milspec and Vltor A5 REs.



The buffer retainer is an inexpensive part, it does it job quietly and most of us don't pay much attention to it. That is, until the tip snaps and goes into the trigger group. RBF aims to mitigate this by strengthening the weakest part of the buffer retainer. We chose to keep the TDP buffer retainer's round tip so it doesn't have to be timed, it's an install and forget component.

RBF has a light bronze sheen from heat treat, and being ever practical, we don't further coat or polish it, as it's stainless steel and an internal part.

RBF can be purchased with optional buffer retainer spring (x2), it's our practice to include more than one spring in a spring kit, if the spring or pin/detent is under pressure during installation and removal.