7.5" 9MM AR 15 Barrel

7.5" 9MM AR 15 Barrel7.5" Barrel with 1:10 Twist, Chambered in 9MM, Nitride Finish, 1/2 x 36" Threaded Barrel, Blow Back SystemFeatures:4150 CMV Barrel steelBlack Nitride Treated1/10 Twist1/2" By 36 Threadsmade In The USALifetime WarrantyAll NFA/ATF Rules ApplyYou 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.