Rosco Manufacturing Purebred 300 Blackout AR-15 Barrel Heavy Pistol - 10.5"
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Rosco Manufacturing
Overview
The Rosco Manufacturing Purebred 300 Blackout AR-15 Barrel features a 10.5-inch heavy profile designed for enhanced accuracy and stability, particularly suited for short-barreled builds. With a pistol-length gas system and a 1:7 twist rate, this barrel effectively stabilizes a variety of bullet weights, ensuring reliable performance with the 300 Blackout caliber. This barrel is commonly found in pistol builds, where compactness and maneuverability are key considerations.
Specifications
Rosco Manufacturing Purebred 300 Blackout AR-15 Barrel Heavy Pistol - 10.5"
Available Merchants(5)
Prices checked
Stock Alert
Build history on GunPartPicker
Builders have added the Rosco Manufacturing Purebred 300 Blackout AR-15 Barrel Heavy Pistol - 10.5" to their builds on GunPartPicker. Since April 2026, it ranks #337 of the 1,044 barrels builders have added.
It was hard to find in October 2026, in stock on only 2 of the 9 days we checked, and today none of the 5 retailers we track has it in stock right now. Listed prices start at $148.50 at Optics Planet 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
Bravo Company Mfg Upper Receiver Assembly w/ Laser T-Markings, Hard Coated Anodized - 4-UR-M4
Spikes Tactical Upper/Lower Receiver .223 Remington AR Lower, Flat Dark Earth - STS1512
Daniel Defense MFR XL Free Float AR-15 Handguard - M-LOK - 9"
Breek Arms Warhammer MOD2 Micro Latch AR-15 Ambidextrous Charging Handle - FDE
Strike Industries AR-15 Gas Tube - Pistol Length
Superlative Arms Bleed Off Adjustable Gas Block Clamp on .750" -Titanium - DLC Dark Finish
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 - 10.5"
| Build | Parts | Total |
|---|---|---|
 | 9 | $609.29 |
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