The Advance Armament 5.56 Nitride Barrel for the AR-15 platform is a durable, 16-inch mil-spec barrel that features a 1-7 twist, standard 1/2-28 muzzle threads and an included pinned gas block. Learn more here [ Ссылка ]
![](https://i.ytimg.com/vi/axiDL73RGyc/maxresdefault.jpg)
The Advance Armament 5.56 Nitride Barrel for the AR-15 platform is a durable, 16-inch mil-spec barrel that features a 1-7 twist, standard 1/2-28 muzzle threads and an included pinned gas block. Learn more here [ Ссылка ]