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The Rosco K9 Sauce Pack bundles the core components you need for a reliable AR-15 build, with every part hand-selected to work together seamlessly. This is the kind of kit that takes the guesswork out of sourcing matched components, so you get results straight out of the box without hunting for compatibility issues.
The K9 13.95" barrel is the sweet spot for builders who want better handling without NFA concerns. The continuous taper profile shifts weight rearward, creating a rifle that points naturally and balances well when you add modern front-end attachments. With an optimized gas port, this barrel runs reliably with or without a suppressor, making it genuinely versatile for different setups. The mid-length gas system keeps recoil smooth and reduces wear on the bolt carrier group, which means fewer malfunctions and longer service life from your components.
Rosco engineered the K9 taper to stiffen the barrel while keeping weight closer to center. The nitride finish handles corrosion and heat well, and the 1:7 twist stabilizes everything from lighter varmint rounds to heavier projectiles. The recessed target crown improves harmonics and shot consistency, without sharp 90-degree cuts that can cause premature wear.
You're getting a Bloodline BCG, non-adjustable Bloodline gas block, and Bloodline gas tube configured in mid-length. These aren't randomly paired parts. Rosco matched them so they create one unified system where every component reaches its peak performance. The BCG is full-auto rated and mil-spec built, the gas block features a knockout hole for easier gas tube removal, and everything installs with minimal fussing.
All you need to add is an upper receiver, handguard, and lower parts kit. Drop these components in and you're ready to start building.
Each component in this pack is hand-selected and designed to work as a unified system. Rosco matched the barrel, BCG, gas block, and gas tube so they synchronize together and bring out the peak performance of each part. You get verified compatibility without the hassle of sourcing matched components yourself, plus typically better value than purchasing items individually.
Yes. The K9 13.95" features an optimized gas port that cycles reliably both suppressed and unsuppressed. The mid-length gas system helps keep recoil manageable in either configuration, making it genuinely flexible for different shooting applications.
You'll need an upper receiver, handguard, lower receiver, lower parts kit, stock, charging handle, and magazine. The barrel comes with the gas tube pre-fit, and the gas block requires assembly, but everything AR-15 compatible will work with this bundle.
Yes, the Bloodline BCG is full-auto rated and built to mil-spec dimensions, so it works in any standard AR-15 upper. It's also compatible with both 5.56 NATO and .300 AAC Blackout.
| UPC | 850039693151 |
|---|---|
| Manufacturer | |
| Manufacturer Part Number | SP-K9-1395-556-BCG-GTM-NGB-001 |
| Thread Pattern | 1/2"x28 |
| Model | |
| Product Type | Barrel |
| Color | Black |
| Caliber/Gauge | .223 REM/5.56 NATO |
| Barrel Length | 13.95" |
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