CMMG 14 1/2" AR-15 Upper Assembly. The perfect start to your custom build.
When you want it done right, do it yourself! Build your own custom AR-15 starting with this top-quality flat top Upper Assembly. Includes chrome-lined 14 1/2" M4 barrel with 1:7 twist, permanent YHM Phantom flash hider, bolt and charging handle. Designed for . 223 Remington / 5.56 NATO. Made in the U.S.A.