Forward Controls Design RBF - Reinforced Buffer retainer

RBF Reinforced Buffer retainer 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.