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Mfg Item #: RBF
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.