Rosco Bloodline SaucePackage K9 13.9" 5.56 Upper w/ BCG

The Rosco Bloodline SaucePackage K9 13.9" upper receiver group delivers precision and reliability for serious shooters demanding performance from their AR-15 platform. This complete upper assembly combines Rosco's renowned barrel manufacturing with premium components to create a ready-to-install solution that eliminates the guesswork from building a custom rifle.

What Makes This Different

The SaucePackage configuration includes everything needed for immediate installation - upper receiver, barrel, handguard, bolt carrier group, and charging handle in one complete package. The 13.9" barrel length provides an optimal balance between velocity retention and maneuverability, while the mid-length gas system ensures smooth cycling with reduced felt recoil compared to carbine-length systems. Rosco's cold hammer forged barrel construction delivers consistent accuracy with enhanced barrel life over standard button-rifled alternatives.

Key Features

• Complete upper receiver group with bolt carrier group and charging handle included
• 13.9" cold hammer forged 5.56 NATO/.223 Rem barrel with 1:7 twist rate
• Mid-length gas system for optimal cycling and reduced recoil impulse
• M-LOK compatible handguard for accessory mounting flexibility
• Mil-spec upper receiver with M4 feed ramps for reliable feeding
• Nitride-treated bolt carrier group for enhanced corrosion resistance
• Compatible with standard AR-15 lower receivers

Field testing demonstrates consistent sub-MOA accuracy potential with quality ammunition, making this upper suitable for precision applications, competitive shooting, and professional use. The 13.9" barrel length maintains excellent velocity retention while providing improved handling characteristics in confined spaces. The nitride finish on all critical components resists corrosion and fouling buildup, extending maintenance intervals during high-volume shooting sessions.

Technical Specs

• Caliber: 5.56 NATO/.223 Remington
• Barrel Length: 13.9 inches
• Twist Rate: 1:7 inches
• Gas System: Mid-length
• Barrel Profile: Government/SOCOM profile
• Muzzle Thread: 1/2x28 TPI
• Overall Weight: Approximately 3.2 pounds
• Finish: Type III Hard Coat Anodized upper, Nitride barrel and BCG
• Manufacturing: Made in USA

This complete upper assembly represents exceptional value for shooters seeking proven performance without the complexity of sourcing individual components. The included bolt carrier group and charging handle eliminate additional purchases, while Rosco's manufacturing standards ensure long-term reliability and accuracy retention.