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Reciprocating Hammer

  1. Low Mass:  Worth It? In my previous entries, I have covered muzzle devices and adjustable gas systems.  Now it’s time to address the final piece of the (hardware) puzzle, the reciprocating system.  This entails the Bolt Carrier Group (BCG), the buffer, and the buffer spring. Along with the recoil any firearm experiences from the Newtonian “Equal and Opposite” force from...

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