Ballistic Advantage115811677
Ballistic Advantage 16" 300 Blackout AR-15 Barrel - Modern Series, QPQ Finish, 4150 CMV Steel, DPR Profile$171.00
Availability: In Stock
The Ballistic Advantage Modern Series 8" 300 Blackout AR-15 barrel is purpose-built for pistol-configuration AR builds and short-barreled rifles. If you're running a registered SBR or building a 300 Blackout pistol, this 8-inch barrel delivers the compact profile the cartridge was designed for—all while maintaining practical velocity for subsonic and supersonic loads. The DRP (Designated Rifle Profile) contour keeps weight down without sacrificing rigidity, and the 1:7 twist rate handles a wide range of bullet weights you'll find in .300 Blackout ammunition.
Built from 4150 Chrome Moly Vanadium steel and finished with QPQ corrosion-resistant coating, this barrel is made to last through hard use. The M4 feed ramp extension is also QPQ coated for consistent feeding and durability. The 5/8x24 threaded muzzle accepts industry-standard suppressors—a natural pairing for subsonic .300 Blackout builds. At 19 ounces, the barrel weight is reasonable for a pistol-length gas system, and the .750" gas block journal accepts standard components.
Remember: federal law requires compliance with all NFA/ATF regulations. This barrel is legal to possess only when installed on a registered SBR, registered machine gun, or pistol-configuration firearm. Possession of this barrel with a non-NFA lower receiver is prohibited unless the complete firearm is configured as a pistol. If you're new to the legal landscape of short-barreled rifles, talk to a local FFL or attorney before you buy.
| Caliber | .300 Blackout |
| Length | 8 inches |
| Material | 4150 Chrome Moly Vanadium steel |
| Profile | DRP (Designated Rifle Profile) |
| Finish | QPQ corrosion-resistant coating |
| Gas System | Pistol length |
| Gas Block Journal | .750 inch |
| Twist Rate | 1:7 inches |
| Muzzle Thread | 5/8x24 |
| Weight | 19 ounces |
Federal law requires this barrel to be installed only on a registered SBR, registered machine gun, or pistol-configured firearm. Possession with a non-NFA lower receiver is prohibited. Always verify local and federal compliance before purchase, and consult an FFL or attorney if you're uncertain about the legal status of your build.
The barrel has a 1:7 inch twist rate, which is well-suited for the full spectrum of .300 Blackout ammunition—both subsonic rounds (typically 220–240 grain) and supersonic loads (100–220 grain).
Yes. The barrel has a 5/8x24 threaded muzzle, which is the standard thread pitch for .300 Blackout suppressors and other muzzle devices designed for that caliber.
This barrel is configured with a pistol-length gas system and uses a .750" gas block journal, which accepts standard AR-15 gas blocks designed for that size.
SKU: 115678512 • Width: 2.3in • Height: 1.8in • Depth: 15.2in • Weight: 1.07oz
Availability: In Stock
The Ballistic Advantage Modern Series 8" 300 Blackout AR-15 barrel is purpose-built for pistol-configuration AR builds and short-barreled rifles. If you're running a registered SBR or building a 300 Blackout pistol, this 8-inch barrel delivers the compact profile the cartridge was designed for—all while maintaining practical velocity for subsonic and supersonic loads. The DRP (Designated Rifle Profile) contour keeps weight down without sacrificing rigidity, and the 1:7 twist rate handles a wide range of bullet weights you'll find in .300 Blackout ammunition.
Built from 4150 Chrome Moly Vanadium steel and finished with QPQ corrosion-resistant coating, this barrel is made to last through hard use. The M4 feed ramp extension is also QPQ coated for consistent feeding and durability. The 5/8x24 threaded muzzle accepts industry-standard suppressors—a natural pairing for subsonic .300 Blackout builds. At 19 ounces, the barrel weight is reasonable for a pistol-length gas system, and the .750" gas block journal accepts standard components.
Remember: federal law requires compliance with all NFA/ATF regulations. This barrel is legal to possess only when installed on a registered SBR, registered machine gun, or pistol-configuration firearm. Possession of this barrel with a non-NFA lower receiver is prohibited unless the complete firearm is configured as a pistol. If you're new to the legal landscape of short-barreled rifles, talk to a local FFL or attorney before you buy.
| Caliber | .300 Blackout |
| Length | 8 inches |
| Material | 4150 Chrome Moly Vanadium steel |
| Profile | DRP (Designated Rifle Profile) |
| Finish | QPQ corrosion-resistant coating |
| Gas System | Pistol length |
| Gas Block Journal | .750 inch |
| Twist Rate | 1:7 inches |
| Muzzle Thread | 5/8x24 |
| Weight | 19 ounces |
Federal law requires this barrel to be installed only on a registered SBR, registered machine gun, or pistol-configured firearm. Possession with a non-NFA lower receiver is prohibited. Always verify local and federal compliance before purchase, and consult an FFL or attorney if you're uncertain about the legal status of your build.
The barrel has a 1:7 inch twist rate, which is well-suited for the full spectrum of .300 Blackout ammunition—both subsonic rounds (typically 220–240 grain) and supersonic loads (100–220 grain).
Yes. The barrel has a 5/8x24 threaded muzzle, which is the standard thread pitch for .300 Blackout suppressors and other muzzle devices designed for that caliber.
This barrel is configured with a pistol-length gas system and uses a .750" gas block journal, which accepts standard AR-15 gas blocks designed for that size.
SKU: 115678512 • Width: 2.3in • Height: 1.8in • Depth: 15.2in • Weight: 1.07oz