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.
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