Rosco Purebred Barrel
Best heavy barrel for precision shooters seeking long term durability.
Designed for short-barreled rifle and pistol builds, this component excels when paired with suppressors. It offers a robust, heavy-profile construction that balances durability with precision, making it an ideal upgrade for those seeking reliable performance in compact configurations.
$186.00
Who it's for
- Precision shooters seeking tight groups without paying custom shop prices.
- High-volume shooters who prioritize consistent performance during rapid-fire strings.
- Builders looking for a dependable foundation for a long-term rifle.
Who should skip it
- Hikers or dynamic shooters who need a lightweight, maneuverable setup.
- Rapid-fire enthusiasts who need their equipment to cool down quickly.
- Backcountry hunters or tactical athletes prioritizing mobility and weight savings.
Performance breakdown
Suppressor Compatibility
Optimized gas porting ensures reliable cycling with various suppressor setups.
Thermal Stability
Heavy profile construction effectively manages heat during rapid, sustained fire strings.
Material Durability
416 R stainless steel offers superior longevity and resistance to erosion.
Installation Ease
Standardized dimensions make this a straightforward drop-in upgrade for MK 18 platforms.
Accuracy Potential
Precision rifling and twist rate provide excellent stabilization for 300 Blackout.
Finish Resilience
Bead-blasted exterior provides a rugged, low-glare surface that resists environmental wear.
Key Specs
Barrel Length
10.5 inches
Weight
21.09 ounces
Material
416 R Stainless Steel
Caliber
300 Blackout
Twist Rate
1:7
Thread Pitch
5/8 x 24
Gas Block Size
0.750 inches
Gas System Length
Pistol
Finish
80 Grit Bead Blast
Barrel Extension Finish
Nickel Boron
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