White Label Armory AR15 Barrel Features The White Label Armory AR15 Barrel is chambered in 5.56 NATO and machined with a Government profile contour a classic design that balances weight with heat dissipation and barrel rigidity. A 1-in-7 twist rate stabilizes the full range of common 5.56 NATO bullet weights from lighter varmint loads up to heavier match and duty ammunition. The carbine length gas system is matched to the 11.5 inch barrel length giving the rifle reliable cycling across a wide range of ammunition types. This barrel gives builders a dependable foundation for a compact AR-platform rifle build. At 11.5 inches this barrel is well suited to a short-barreled rifle configuration intended for close-quarters use vehicle-based applications or a lightweight maneuverable build. White Label Armory manufactures the barrel to consistent tolerances supporting reliable headspacing and accuracy when paired with a quality bolt and barrel extension. Builders assembling a complete upper around this barrel will need to source a compatible gas block gas tube and handguard sized for the barrel s contour and length. This barrel gives AR builders a solid starting point for a 5.56 NATO rifle focused on compact size and reliable function. White Label Armory AR-15 Barrel Specifications Manufacturer: White Label Armory Model: AR15 Barrel Caliber: 5.56 NATO Barrel Length: 11.50 Barrel Type: Carbine Length Twist Rate: 1:7 Barrel Description: Government Profile Available At: GrabAGun