AAC 300 Blackout 9" AR Barrel Assembly
Part #: AAC-101718 Brand: Advanced Armament Corp
This Advanced Armament Co (AAC) AR-15 Pistol Barrel Assembly is perfect for the shooter who wishes to build or convert an AR-15 to chamber the new 300 AAC Blackout round in order to take advantage of its unique ballistic characteristics. The barrel is finished inside and out with a highly durable and corrosion resistant Black Nitride, a treatment that produces an extremely hard, slick surface on the steel that resists carbon adhesion for easier cleaning and maintenance. The Nitride process converts the steel's surface without any build-up, retaining all of the benefits of traditional chrome lining without suffering the accuracy degradation commonly encountered with it due to the uneven application of chrome inside a barrel's bore.
The 9" and 12.5" barrel each feature a 1 in 7" twist and is threaded 5/8"-24 at the muzzle. These barrels include the 51T Flash Hider designed to effectively eliminate muzzle flash and works in conjunction with AAC's improved ratchet mount sound suppressors. It utilizes a pistol length gas system and is compatible with most subsonic and supersonic ammunition, with or without a silencer in place. However, some subsonic ammunition may not always cycle reliably under adverse conditions or in a severely fouled firearm without a sound suppressor attached to provide extra backpressure. Barrel assembly includes a pistol gas tube, low profile steel gas block, barrel extension and locator pin. Requires barrel nut for installation (not included).