F Moriarti AR-15 Rifle Barrel Threaded, 5.56x45mm NATO, 10.5 inch, Government, 1-7 Twist, 1/2x28 Thread, Nitride, Nitride, 10.5 inch, MAR-556-105-17-CMV $109.99 MAR55610517CMV - Free Shipping on most orders over $49 Optics Planet