Two Significant Advantages of a Roller Delayed PCC
PCCs, or pistol-caliber carbines, are not rare. Roller-delayed PCCs, which rely on roller-delayed blowback operation as opposed to direct gas impingement, are. Most ARs and AR-style platforms use gas impingement, which requires a gas block, tube, a bolt carrier group with a gas key, and then a buffer system which consists of a tube that houses […]
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