Ballistic Advantage Modern Series 5.56 NATO 12.5 Barrel for AR-15

Modern Series Features This 5.56 chambered 12.5 Government Profile Modern Series Barrel is machined from 4150 Chrome Moly Vanadium steel with a QPQ Corrosion Resistant Finish and QPQ coated M4 feed ramp extension.Specs- 750 Gas block journal gas system length- carbine and a Government profile. All NFA/ATF Rules Apply-You may use this 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. Modern Series Specifications Caliber: 5.56x45mm NATO Model: Modern Series Finish: QPQ Color: Black Material: 4150 Chrome Moly Vanadium Steel Sights: None Firearm Fit: AR-15 Length: 12.50 Thread Pattern: 1 / 2-28 tpi Twist: 1:7 Weight: 22 oz Barrel Type: Carbine Length Government Profile Barrel Features: Threaded