Rosco Manufacturing Purebred 300 Blackout AR-15 Barrel Heavy Pistol Length - 8.2"
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Overview
The Rosco Manufacturing Purebred 300 Blackout AR-15 Barrel is an 8.2" heavy profile barrel designed specifically for the 300 Blackout caliber. With a pistol-length gas system, this barrel enhances reliability and performance in shorter builds, while its 1:7 twist rate ensures stability for a wide range of bullet weights. Commonly found in pistol builds chambered in 300 Blackout, this barrel is ideal for those looking to maximize velocity and accuracy in compact configurations.
Specifications
Rosco Manufacturing Purebred 300 Blackout AR-15 Barrel Heavy Pistol Length - 8.2"
Build history on GunPartPicker
Builders have added the Rosco Manufacturing Purebred 300 Blackout AR-15 Barrel Heavy Pistol Length - 8.2" to their builds on GunPartPicker. Since April 2026, it ranks #507 of the 1,049 barrels builders have added.
It was out of stock everywhere we track every time we checked in October 2026, and today none of the 3 retailers we track has it in stock right now. Listed prices start at $169 at Brownells for when it comes back.
Updated · from real builds on GunPartPicker · Prices checked · refreshed daily across 37 retailers
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Frequently Built With
The part most often added in each category by the builds that include this one
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Breek Arms Warhammer MOD2 AR-15 Ambidextrous Charging Handle - FDE
FailZero Bolt Carrier Group With Hammer EXO Coated, Fits M16/4, Nickel - FZ-M164-01-SAH
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 builds →Builds in the community that include the Rosco Manufacturing Purebred 300 Blackout Ar-15 Barrel Heavy Pistol Length - 8.2"
| Build | Parts | Total |
|---|---|---|
 | 25 | $3706.83 |
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