Rosco Manufacturing Bloodline 300 Blackout AR-15 Barrel Heavy Pistol - 8.2"
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Rosco Manufacturing
Overview
The Rosco Manufacturing Bloodline 300 Blackout AR-15 Barrel is designed for pistol builds, featuring an 8.2-inch length that optimizes maneuverability while maintaining performance. With a SOCOM profile and a twist rate of 1:7, this barrel effectively stabilizes heavier projectiles, making it ideal for subsonic and supersonic ammunition alike. Commonly found in pistol setups, it is a solid choice for builders looking to enhance their 300 Blackout configurations.
Specifications
Rosco Manufacturing Bloodline 300 Blackout AR-15 Barrel Heavy Pistol - 8.2"
Build history on GunPartPicker
Builders on GunPartPicker first added the Rosco Manufacturing Bloodline 300 Blackout AR-15 Barrel Heavy Pistol - 8.2" to a build in March 2026.
It was in stock most days in August 2026, and today 6 of the 7 retailers we track have it in stock. The best price drifted down from $145.80 to $109.99 over August 2026 without a real sale. Buying today, the lowest price is $118.49 at Ammunition Depot, above August's low of $109.99, so a better deal may come back.
Updated · from real builds on GunPartPicker · Prices checked · refreshed daily across 35 retailers
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Frequently Built With
The part most often added in each category by the 6 builds that include this one
Bravo Company Mfg Upper Receiver Assembly w/ Laser T-Markings, Hard Coated Anodized - 4-UR-M4
ODIN Works Clamp on Adjustable Low Profile Gas Block - .750"
Yankee Hill Machine Co. AR-15 Gas Tube Black Rifle
Spikes Tactical Made in USA Ejection Port Door for AR-15 Style Rifle - SED7002
Strike Industries T-Bone AR-15 Charging Handle for .223/5.56 - Black/Black
Aero Precision AR-15 5.56 BCG W/C158 Bolt - Aero Logo - Phosphate
Build Configuration Breakdown
Aggregated and anonymized data showing how builders use this product
PlatformBased on real build data showing which platform (AR-15, AR-10, AR-9) builders pair with this product.
Builds Featuring This Part
See all 4 →Builds in the community that include the Rosco Manufacturing Bloodline 300 Blackout Ar-15 Barrel Heavy Pistol - 8.2"
| Build | Parts | Total |
|---|---|---|
 | 13 | $744.91 |
 | 14 | $3567.71 |
 | 19 | $2914.54 |
 | 13 | $1204.80 |
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