Ballistic Advantage 9 .300 BLK Pistol Length Nitride Modern Series Barrel
Precision-engineered for reliability, built to handle the heat.
The Ballistic Advantage 9″ .300 Blackout Barrel from the Modern Series is a premium choice for AR-15 pistol or SBR builds chambered in .300 BLK. Crafted from 4150 Chrome Moly Vanadium steel and finished with a QPQ black nitride coating, this barrel delivers superior corrosion resistance and barrel life.
Featuring the Distinct Rigid Pattern (DRP) profile, this barrel is optimized for reduced whip, improved heat dissipation, and consistent shot placement under pressure. The 1:7 twist rate supports subsonic and supersonic loads, making it ideal for suppressed or unsuppressed setups. With a pistol-length gas system, .750 gas block journal, and 5/8×24 muzzle threads, this barrel offers drop-in compatibility with most AR-15 components.
All barrels are High Pressure (HP) and Magnetic Particle Inspected (MPI) for safety and reliability. Whether you’re building for CQB, defense, or suppressed use, this barrel is engineered to perform.
Features
- 9″ barrel length ideal for compact AR pistol or SBR builds
- .300 AAC Blackout chambering for subsonic/supersonic performance
- 4150 CMV steel with QPQ black nitride finish
- Distinct Rigid Pattern (DRP) profile minimizes whip and improves heat handling
- 1:7 twist rate for versatile ammo compatibility
- Pistol-length gas system for smooth cycling
- M4 feed ramp extension
- HP and MPI tested for quality assurance
- Threaded 5/8×24 for muzzle device or suppressor compatibility
- Made in the USA
Specifications
- Caliber: .300 AAC Blackout
- Barrel Length: 9″
- Twist Rate: 1:7
- Gas System: Pistol-Length
- Gas Block Journal: .750″
- Profile: Distinct Rigid Pattern (DRP)
- Material: 4150 Chrome Moly Vanadium
- Finish: QPQ Nitride
- Muzzle Thread: 5/8×24
- Platform: AR-15
- Feed Ramp: M4
Compliance Note:
All NFA/ATF rules apply. Use only with registered SBRs, pistols, or machine guns. Check local laws before installing on a lower receiver.






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