The Ruger AR-556 is ready to go out of the box without any modifications. This particular version is a exclusive version featuring Magpul MOE furniture. The Ruger AR-556 starts off with 7075-T6 Aluminum forged upper and lower receivers and those receivers are coated with a Type III hard coat anodized finish. Next off you a treated to a 16" barrel which features a 1:8" twist rate perfect for just about any of your favorite .223 Remington or 5.56 NATO loads. The AR-556 features a carbine length direct gas impingement system ideal for just about any type of shooting. So if you are in need of a new AR-15 for hunting, defense, or anything in between check out the new AR-556 Magpul MOE edition from Ruger.