ROSCO 10.5" 5.56 Barrel Kit with BCG & Gas Tube - SaucePackage

The ROSCO SaucePackage delivers a complete upper receiver group solution for builders seeking precision-engineered components in one package. This 10.5-inch barrel kit combines ROSCO's manufacturing expertise with carefully matched components for reliable performance in compact AR-15 builds.

What Makes This Different

This complete kit eliminates the guesswork of component matching by pairing a precision-manufactured 10.5-inch barrel with a properly headspaced bolt carrier group and gas tube system. The barrel features a government profile with M4 feed ramps and a 1:7 twist rate optimized for 5.56 NATO ammunition. Unlike pieced-together builds, every component is tested for compatibility and timing.

Key Features

• 10.5-inch government profile barrel with 1:7 twist rate for stabilizing heavier projectiles
• Complete bolt carrier group with properly staked gas key and magnetic particle inspected bolt
• Carbine-length gas system with stainless steel gas tube for optimal cycling
• Chrome-lined bore and chamber for extended barrel life and corrosion resistance
• M4 barrel extension with feed ramps for reliable feeding
• QPQ nitride finish on barrel for enhanced durability and heat resistance
• Compatible with standard AR-15 upper receivers and handguard systems

The 10.5-inch configuration provides excellent maneuverability for close-quarters applications while maintaining effective range out to 300 yards. The carbine-length gas system ensures reliable cycling with both standard pressure and +P ammunition. Weather-sealed components resist moisture and debris infiltration during extended use.

Technical Specs

• Barrel Length: 10.5 inches
• Caliber: 5.56 NATO/.223 Remington
• Twist Rate: 1:7 inches
• Gas System: Carbine length
• Profile: Government/M4
• Finish: QPQ Nitride
• Thread Pitch: 1/2x28 TPI
• Chamber: 5.56 NATO with M4 feed ramps
• BCG Material: 8620 steel bolt, Carpenter 158 steel carrier
• Gas Tube: Stainless steel construction
• Made in USA

This complete package streamlines the build process while ensuring component compatibility and timing. Professional builders and enthusiasts alike benefit from the precision manufacturing and quality control that goes into each SaucePackage kit.