Rosco Manufacturing Bloodline Sauce Pack 5.56 NATO 11.5" 1:7 Government Barrel + BCG & Gas System

The Rosco Manufacturing Bloodline Sauce Pack is a complete 5.56 NATO upper-build bundle built around the company's well-regarded Bloodline barrel platform. Designed for the AR-15/M4 platform, this kit combines an 11.5" Government-profile barrel with a matched bolt carrier group, gas block, and carbine-length gas tube to give builders a turn-key foundation for a hard-use upper assembly.

The heart of the Sauce Pack is the 11.5" Bloodline barrel, machined from 4150 chromoly vanadium steel and finished in black nitride (Melonite) for corrosion resistance and long service life. The barrel features a 1:7 rifling twist for stabilizing 5.56 NATO bullet weights, and a 1/2"x28 thread pattern that accepts any standard AR-15 muzzle device or sound suppressor.

Carbine-length gas system components are included to match the short barrel configuration, pairing the included gas block with a properly sized carbine-length gas tube for reliable cycling. The matched bolt carrier group (BCG) rounds out the kit, giving builders a turn-key foundation for a compact pistol, short-barrel rifle, or feature-packed carbine upper.

By bundling the barrel, BCG, gas block, and gas tube into a single matched kit, the Rosco Bloodline Sauce Pack saves build time and ensures proper fit-up between the critical wear-item components of your AR-15 upper.