Rock River Arms Completed Upper Receiver FESP .223 Wylde 16 Inch Barrel Mid Lenght Profile 1-8 Twist 1/2-28 Thread Free-Float Handguard Brake Black

Rock River Arms

Overview

The Rock River Arms Completed Upper Receiver features a 16-inch barrel chambered in .223 Wylde, which allows for versatility in shooting both .223 Remington and 5.56 NATO cartridges. With a mid-length gas system and a 1:8 twist rate, this upper is designed for improved reliability and performance, stabilizing a wide range of bullet weights effectively. This upper receiver is commonly found in builds focused on mid-range performance and versatility, making it ideal for both target shooting and varmint hunting.