Advanced Armament Co (AAC) AR-15 Pistol Barrel Assembly 300 AAC Blackout 1 in 7" Twist Chrome Moly Matte with Low Profile Gas Block
Product Family #: 2923466879
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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).
Material: 4150 Chrome Moly Vanadium Steel
Chamber: 300 AAC Blackout
Twist Rate: 1 in 7"
Chrome Lined: No
Finish: Black Nitride / Melonite
M4 Feed Ramps: Yes
Muzzle Thread Pattern: 5/8"-24
Gas Port Location: Pistol
Exterior Diameter at Gas Port: 0.750"
Extras: Low Profile Gas Block, Gas Tube, 51T Flash Hider
Additional Info: Suitable for use w/Subsonic or Supersonic loads, either Suppressed or Unsuppressed
Please Note: An “AR-15 Pistol” upper assembly has a barrel less than 16” in length. Pistol uppers are only for use on AR-15 pistol lowers and legal Short-Barreled Rifles. Other configurations may violate Federal law.
Must Ship to FFL Dealer
Guns must be shipped to an FFL Dealer for transfer. You will have the opportunity to find and choose one in your area before placing your order.
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