Rock River Arms Completed Upper Receiver National Match A2 .223/5.56mm 20 Inch Barrel 1-8 Twist 1/2-28 Thread Free-Float Handguard A2 Flash Hider

Rock River Arms

Overview

The Rock River Arms Completed Upper Receiver National Match A2 is designed for the AR-15 platform and features a 20-inch barrel optimized for 5.56 NATO ammunition. With a 1:8 twist rate, this upper receiver allows for a versatile range of bullet weights, enhancing accuracy and stability during firing. The A2 receiver type and 1/2x28 thread pitch make it compatible with a variety of muzzle devices, while the complete assembly simplifies installation for builders. This upper receiver is often utilized in precision-oriented builds, particularly for target shooting and competitive applications.