Rock River Arms Upper Receiver A4 .223 Wylde 16 Inch Barrel Varmint Profile 1-8 Twist Free-Float Handguard Black

Rock River Arms

Resumen

The Rock River Arms Upper Receiver A4 features a complete assembly with a 16-inch barrel chambered in .223 Wylde, allowing for versatility in shooting both .223 Remington and 5.56 NATO ammunition. The 1:8 twist rate enhances the stability and accuracy of a wide range of bullet weights, making it suitable for various applications, from target shooting to varmint hunting. This upper is commonly found in AR-15 builds designed for precision and versatility in performance.