Ballistic Advantage194198860
Ballistic Advantage Ar-15 Modern Series 7.5 Pistol Length Barrel$109.25
Availability: In Stock
The Ballistic Advantage 300 Blackout pistol length AR barrel is a 10-inch upper receiver component built for short-barreled rifle (SBR) and pistol configurations. This 300 Blackout barrel is machined from 4150 Chrome Moly Vanadium steel—a time-proven material for AR barrels that resists wear and handles sustained fire without premature throat erosion. The QPQ corrosion-resistant finish protects against rust and wear in field conditions, and the QPQ-coated M4 feed ramp extension ensures reliable feeding across factory and hand-loaded ammunition variants.
Ballistic Advantage's 300 Blackout barrel brings serious performance to short-range tactical setups, hunting builds, and suppressed carbines. The 1:7 twist rate stabilizes the full spectrum of 300 Blackout loads—from subsonic 220-grain rounds to supersonic 125-grain and everything in between. At 10 inches, the barrel preserves the handling and ballistics you'd expect from pistol-length gas systems while maximizing velocity in a compact footprint.
If you're planning to use this barrel, remember that federal law requires compliance with the National Firearms Act. A 300 Blackout pistol barrel can only be legally possessed and used on a registered short-barreled rifle (SBR), an AOW, a registered machine gun, or a legal pistol configuration firearm. Pairing this barrel with a non-NFA lower receiver—unless that lower itself is legally registered as a pistol—violates federal law. Always verify your local and federal regulations before assembly.
| Chambering | .300 Blackout |
| Barrel Length | 10 inches |
| Material | 4150 Chrome Moly Vanadium |
| Finish | QPQ Corrosion Resistant |
| Gas Block Journal Diameter | .750 inches |
| Twist Rate | 1:7 inches |
| Feed Ramp Extension | M4 (QPQ coated) |
No. This barrel is legal only on NFA-registered short-barreled rifles, registered machine guns, or legally configured pistol lower receivers. Using it with a standard rifle lower receiver violates federal law. Always verify your build complies with ATF regulations.
The 1:7 twist rate handles both subsonic rounds (typically 220 grains) and supersonic loads (125 to 147 grains) reliably. This versatility makes it ideal for suppressed shooting and general-purpose 300 Blackout use.
Yes. The M4 feed ramp extension features the same QPQ corrosion-resistant finish as the barrel, ensuring consistent protection and reliable feeding.
Any standard AR gas block sized for .750-inch journal diameter will fit this Ballistic Advantage barrel.
SKU: 152828920 • Width: 2.3in • Height: 1.75in • Depth: 12in • Weight: 1.295oz
Availability: In Stock
The Ballistic Advantage 300 Blackout pistol length AR barrel is a 10-inch upper receiver component built for short-barreled rifle (SBR) and pistol configurations. This 300 Blackout barrel is machined from 4150 Chrome Moly Vanadium steel—a time-proven material for AR barrels that resists wear and handles sustained fire without premature throat erosion. The QPQ corrosion-resistant finish protects against rust and wear in field conditions, and the QPQ-coated M4 feed ramp extension ensures reliable feeding across factory and hand-loaded ammunition variants.
Ballistic Advantage's 300 Blackout barrel brings serious performance to short-range tactical setups, hunting builds, and suppressed carbines. The 1:7 twist rate stabilizes the full spectrum of 300 Blackout loads—from subsonic 220-grain rounds to supersonic 125-grain and everything in between. At 10 inches, the barrel preserves the handling and ballistics you'd expect from pistol-length gas systems while maximizing velocity in a compact footprint.
If you're planning to use this barrel, remember that federal law requires compliance with the National Firearms Act. A 300 Blackout pistol barrel can only be legally possessed and used on a registered short-barreled rifle (SBR), an AOW, a registered machine gun, or a legal pistol configuration firearm. Pairing this barrel with a non-NFA lower receiver—unless that lower itself is legally registered as a pistol—violates federal law. Always verify your local and federal regulations before assembly.
| Chambering | .300 Blackout |
| Barrel Length | 10 inches |
| Material | 4150 Chrome Moly Vanadium |
| Finish | QPQ Corrosion Resistant |
| Gas Block Journal Diameter | .750 inches |
| Twist Rate | 1:7 inches |
| Feed Ramp Extension | M4 (QPQ coated) |
No. This barrel is legal only on NFA-registered short-barreled rifles, registered machine guns, or legally configured pistol lower receivers. Using it with a standard rifle lower receiver violates federal law. Always verify your build complies with ATF regulations.
The 1:7 twist rate handles both subsonic rounds (typically 220 grains) and supersonic loads (125 to 147 grains) reliably. This versatility makes it ideal for suppressed shooting and general-purpose 300 Blackout use.
Yes. The M4 feed ramp extension features the same QPQ corrosion-resistant finish as the barrel, ensuring consistent protection and reliable feeding.
Any standard AR gas block sized for .750-inch journal diameter will fit this Ballistic Advantage barrel.
SKU: 152828920 • Width: 2.3in • Height: 1.75in • Depth: 12in • Weight: 1.295oz