7.5" 9mm AR-15 Barrel 1:10 Twist Black Nitride 1/2x36 Threaded

7.5" 9MM AR 15 Barrel 7.5" Barrel with 1:10 Twist, Chambered in 9MM, Nitride Finish, 1/2 x 36" Threaded Barrel, Blow Back System Features: 4150 CMV Barrel steel Black Nitride Treated 1/10 Twist 1/2" By 36 Threads made In The USA Lifetime Warranty All NFA/ATF Rules Apply You may use this AR 15 barrel with a lower receiver that is a Registered SBR, Machine Gun, or Pistol. Possession of this barrel along with a Non-NFA lower receiver is Prohibited, except when installed on a Pistol configuration firearm. Check your local laws and jurisdictions.