Videos tagged with Staked Gas Key

This product spotlight from Brownells introduces the BRN-733 retro upper receiver, a Commando-style build. It highlights the unique C7 upper receiver, a Canadian contract variant by Colt that blends A1 and A2 features, specifically an A1 rear sight with an A2-style shell deflector. The build includes an 11.5-inch barrel with a non-F marked front sight post, a standard bird cage flash hider, and a 1:7 twist rate.

This review of the Olympic Arms K3BM4 A3 AR-15 highlights its faithful reproduction of the M4 design, featuring a 16-inch stainless steel barrel with a 1:9 twist rate and a flat-top upper receiver. The rifle demonstrates reliable function with various ammunition types, including Wolf Performance, and achieves respectable accuracy at 100 yards with both iron sights and an optic. The review emphasizes the quality of internal components, such as the M16-style bolt carrier with a staked gas key and forged receivers, noting their approval for government purchase.