Videos tagged with Internal Piston System

This comprehensive review of the Colt CK-901, developed for the Yemeni Republican Guard, details its unique AR-15 platform design engineered to reliably accept AK-47 magazines and 7.62x39mm ammunition. The video highlights Colt's historical challenges with this caliber and the innovative solutions implemented in the CK-901, including a proprietary bolt carrier group and firing pin, to overcome issues like bolt lug breakage and ignition failures. It also contrasts the CK-901 with later commercial Colt variants like the CR6762.

This video, presented by a highly authoritative source on firearms mechanics, challenges the common classification of the AR-15/M16 system as 'Direct Impingement.' Instead, it argues, based on Eugene Stoner's patents and mechanical analysis, that the AR-15 utilizes an internal piston system. True Direct Impingement rifles, like the French MAS49, are contrasted with the AR-15's design where gas acts within the bolt carrier group.