Watch our video above to see this 7.62x39 mm-chambered AR-15 in use on the range ... as seen here on the range with Colt’s MSR Carbine churning out the empties, trouble-free.

Colt began marketing semi-automatic versions of the rifle to gun enthusiasts and police forces alike. Colt's patent for the AR-15 expired in 1977. After that, other firearms manufacturers - such ...