Ballistic Advantage167528923
Ar-15 Pistol Length 6 Barrel .300 Blackout$155.00
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Availability: In Stock
The Ballistic Advantage AR-15 Pistol Length 9 Barrel in .300 Blackout delivers the subsonic punch and compact handling that make this cartridge a favorite for suppressed short-barreled platforms. At 6 inches, this barrel is purpose-built for AR pistol builds and optimized to cycle .300 Blackout ammunition reliably in a configuration that doesn't require NFA registration when paired with a pistol-configured lower receiver. If you're assembling a PDW-style AR pistol, a quiet host for suppressed shooting, or a compact backcountry rifle, this is the barrel that bridges velocity and portability without compromise.
Built from 4150 Chrome Moly Vanadium steel and finished with a QPQ corrosion-resistant coating, this barrel handles the demands of centerfire shooting with a durable, rust-resistant surface. The gas block journal is sized at .750 inches to accept standard AR accessories, and the 1:7-inch twist rate is optimized to stabilize the wide range of bullet weights that make .300 Blackout so versatile—from 110-grain varmint rounds to 220-grain subsonic hunters. The M4 feed ramp extension is also QPQ coated for consistent feeding and longevity.
Important: This is a restricted component under NFA/ATF rules. Federal law permits installation on a registered SBR, machine gun, or pistol lower receiver. Possession with an unregistered rifle-configured lower is prohibited. Always verify your local and federal compliance before assembly.
| Barrel Length | 6 inches |
| Chambering | .300 Blackout |
| Material | 4150 Chrome Moly Vanadium Steel |
| Finish | QPQ Corrosion Resistant |
| Gas Block Journal Diameter | .750 inches |
| Twist Rate | 1:7 inches |
| Feed Ramp | M4 extension, QPQ coated |
| Brand | Ballistic Advantage |
This barrel is restricted under federal NFA/ATF rules. You may legally install it on a registered Short Barreled Rifle (SBR), a registered machine gun, or on a pistol-configured lower receiver. Possession with an unregistered rifle-configuration lower receiver is prohibited by law. Always consult federal and local regulations before assembly to ensure compliance.
The 1:7-inch twist rate is optimized for the full spectrum of .300 Blackout loads, from lightweight supersonic rounds (110 grains) to heavy subsonic ammunition (220 grains). This versatility is one of the key advantages of the cartridge, and the barrel's twist is tuned to stabilize all of them reliably.
The gas block journal is .750 inches in diameter, which is the standard for AR platform gas blocks. Any .750-inch journal gas block will fit properly on this barrel.
Yes. The .300 Blackout cartridge is particularly suited to suppressed shooting, especially with heavier subsonic loads, and this 6-inch pistol barrel is a popular choice for that role. Pair it with a quality suppressor rated for .300 Blackout and you'll get excellent results.
SKU: 167528918 • Weight: 1.16oz
Availability: In Stock
The Ballistic Advantage AR-15 Pistol Length 9 Barrel in .300 Blackout delivers the subsonic punch and compact handling that make this cartridge a favorite for suppressed short-barreled platforms. At 6 inches, this barrel is purpose-built for AR pistol builds and optimized to cycle .300 Blackout ammunition reliably in a configuration that doesn't require NFA registration when paired with a pistol-configured lower receiver. If you're assembling a PDW-style AR pistol, a quiet host for suppressed shooting, or a compact backcountry rifle, this is the barrel that bridges velocity and portability without compromise.
Built from 4150 Chrome Moly Vanadium steel and finished with a QPQ corrosion-resistant coating, this barrel handles the demands of centerfire shooting with a durable, rust-resistant surface. The gas block journal is sized at .750 inches to accept standard AR accessories, and the 1:7-inch twist rate is optimized to stabilize the wide range of bullet weights that make .300 Blackout so versatile—from 110-grain varmint rounds to 220-grain subsonic hunters. The M4 feed ramp extension is also QPQ coated for consistent feeding and longevity.
Important: This is a restricted component under NFA/ATF rules. Federal law permits installation on a registered SBR, machine gun, or pistol lower receiver. Possession with an unregistered rifle-configured lower is prohibited. Always verify your local and federal compliance before assembly.
| Barrel Length | 6 inches |
| Chambering | .300 Blackout |
| Material | 4150 Chrome Moly Vanadium Steel |
| Finish | QPQ Corrosion Resistant |
| Gas Block Journal Diameter | .750 inches |
| Twist Rate | 1:7 inches |
| Feed Ramp | M4 extension, QPQ coated |
| Brand | Ballistic Advantage |
This barrel is restricted under federal NFA/ATF rules. You may legally install it on a registered Short Barreled Rifle (SBR), a registered machine gun, or on a pistol-configured lower receiver. Possession with an unregistered rifle-configuration lower receiver is prohibited by law. Always consult federal and local regulations before assembly to ensure compliance.
The 1:7-inch twist rate is optimized for the full spectrum of .300 Blackout loads, from lightweight supersonic rounds (110 grains) to heavy subsonic ammunition (220 grains). This versatility is one of the key advantages of the cartridge, and the barrel's twist is tuned to stabilize all of them reliably.
The gas block journal is .750 inches in diameter, which is the standard for AR platform gas blocks. Any .750-inch journal gas block will fit properly on this barrel.
Yes. The .300 Blackout cartridge is particularly suited to suppressed shooting, especially with heavier subsonic loads, and this 6-inch pistol barrel is a popular choice for that role. Pair it with a quality suppressor rated for .300 Blackout and you'll get excellent results.
SKU: 167528918 • Weight: 1.16oz