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.
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