Product DescriptionThis barrel assembly is all you need to convert your 5.56mm AR to 300 AAC BLACKOUT (7.62x35mm).The 4150 steel barrel features a black nitride finish (including bore and chamber), 1:8" twist for super- or sub-sonic use. It comes ready for silencer use, threaded 5/8-24. Includes thread protector, gas tube, steel low-profile press-fit set screw gas block (barrel has set-screw divots for gas block alignment). Please Note: This description may represent a general group of products. Please read the item's title and specifications for more specific information about this particular item. |