Inside the Springfield Armory SA-16A2 is an M16 bolt-carrier group, which is marked with Springfield's cross-cannon logo.

Firing from an open bolt, and featuring a heavier-than-normal bolt carrier group as well as a shortened barrel, the result of Colt’s modification regime was dubbed the XM231, later officially ...

Facts You Didn’t Know About the M16 ... In fact, his only really successful design had been the AR-5 survival rifle, a bolt action takedown rifle that was chambered for the .22 Hornet cartridge.

Here’s What You Need to Remember: In the summer of 1966 rumors began to filter out of Vietnam of problems with the rifle. The rumors included weapons failing to feed, failing to fire, and ...

The next tool you will need is the installer. Precision Performance Products sold us this one, but it is essentially a 6-inch M16 x 2.0 threaded rod that is slightly longer than the balancer bolt.