Stainless AR-15 224 Valkyrie Barrel AR-15 EABCO Accuracy Barrel® chambered for 224 Valkyrie, ready to install in a standard Mil Spec AR-15 rifle. To complete your conversion , you will need a 6.8 Remington AR-15 bolt (or complete bolt carrier group) and 6.8 Remington AR-15 Magazine(s). We have everything! As you may know, 224 Valkyrie is a new cartridge that has similar 1300 yard ballistics to 6.5 Creedmoor... But you can shoot it in your AR-15! Our EABCO Stainless 224 Valkyrie barrels are fully chambered and ready to install on any mil spec AR-15 upper receiver. They feature an 11° target crown for enhanced accuracy potential, and they're compatible with the new Federal 224 Valkyrie ammunition. These barrels are rifled 1:7 twist which is optimal for the 60-90 grain weights of long range 224 Valkyrie bullets. Ready to install with M4 feed ramps, barrel extension, and locator pin included. Muzzle is threaded 1/2 x 28 for compatibility with muzzle accessories and suppressors. Converting Your Rifle to 224 Valkyrie is Simple. First, install this barrel on your AR-15. Next, install our 6.8 Rem bolt in your BCG (or just swap in our entire 6.8 BCG). Then order our 6.8 Rem magazines. We have everything you need!