*Cold Hammer Forged Barrel* This Bear Creek Arsenal AR-15 20" Government contour, Black Nitride 5.56 barrel has a rifle length gas system with a 1:8 twist rate. Our rifle barrels are made from the finest 4150 Chrome Moly Vanadium and precisely rifled for high accuracy at a great price. Use a Bear Creek Arsenal ar barrel in your AR15 next build and experience superior performance backed by a lifetime warranty! Forged to last a lifetime! All finished barrels go through a 100% inspection process. Inspections Equipment includes CMMs and Air Gauges for the bores as well as visual and machine inspection. Shop more 5.56 NATO Barrels! Check out Magazines here! {{widget type="Magento\Cms\Block\Widget\Block" template="widget/static_block/default.phtml" block_id="56"}} {{widget type="Magento\Cms\Block\Widget\Block" template="widget/static_block/default.phtml" block_id="42"}} Does not include gas block or gas tube