Rock River Arms Completed Upper Receiver Left Handed RAGE .223/5.56mm 7 Inch Barrel 1-9 Twist 1/2-28 Thread Free-Float Handguard A2 Flash Hider Black

Rock River Arms

Overview

The Rock River Arms Completed Upper Receiver is designed specifically for left-handed shooters, featuring a 7-inch barrel chambered in 5.56 NATO with a 1:9 twist rate, which is ideal for stabilizing a range of bullet weights. The 1/2x28 thread pitch allows for easy attachment of muzzle devices, while the free-float handguard enhances accuracy by eliminating contact with the barrel. This upper receiver is commonly used in compact builds that prioritize maneuverability and are suited for close-quarters engagements.