The Bushmaster Assault Rifle, designed by Mack Gwinn, was a 1970s attempt to create a cost-effective military-style rifle, influenced by the Stoner 63A's long-stroke gas piston system. While featuring AR-15 controls and magazine compatibility, its execution was crude, utilizing sheet metal receivers and a welded bolt carrier. Range testing revealed significant reliability issues, including failures to fire and light primer strikes, ultimately limiting its practical success.
This video provides a field strip and breakdown of the original Gwinn Firearms Bushmaster Rifle. Despite its 'ugly' slab-sided aluminum receiver and blocky appearance, the rifle is chambered in 5.56mm and can accept M16 magazines. The video aims to explain the inner workings of this unique firearm, with acknowledgments to Ventura Munitions for their support and a mention of the TFBTV Patreon page.
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