Ballistic Advantage 300 Blackout 10.5" Drop-In AR-15 Barrel
Ballistic Advantage
$156.75
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Ballistic Advantage
Ballistic Advantage 300 Blackout 10.5" Drop-In AR-15 Barrel
The Ballistic Advantage 10.5" .300 Blackout Modern Series Barrel delivers exceptional short-barrel performance, purpose-built for AR-15 pistol and SBR configurations where compact size and reliable cycling are non-negotiable.
- 10.5" barrel length optimized for .300 Blackout pistol and SBR builds
- Machined from 4150 Chrome Moly Vanadium steel for superior strength and durability
- QPQ Corrosion Resistant Finish provides long-lasting protection against wear and moisture
- QPQ coated M4 feed ramp extension ensures smooth, reliable cartridge feeding
- 1:7" twist rate stabilizes both subsonic and supersonic .300 Blackout loads effectively
- 5/8x24 threaded muzzle ready for suppressors, muzzle devices, and flash hiders
Who This Is For
This barrel is ideal for shooters building or upgrading a .300 Blackout AR pistol or short-barreled rifle who want a premium, professionally machined barrel without compromise. Whether you're a homeowner looking for a compact home-defense platform, a suppressor enthusiast chasing subsonic performance, or a tactical shooter who needs a hard-hitting, maneuverable setup, this Ballistic Advantage barrel delivers the reliability and finish quality to match your mission.
Specifications
| Brand | Ballistic Advantage |
|---|---|
| Caliber | .300 Blackout |
| Barrel Length | 10.5 inches |
| Profile | DRP (Dimpled, Rifle Profile) |
| Material | 4150 Chrome Moly Vanadium Steel |
| Finish | QPQ Corrosion Resistant |
| Twist Rate | 1:7 inches |
| Gas System | Pistol Length |
| Muzzle Thread | 5/8x24 |
| Feed Ramp | M4, QPQ Coated |
| Series | Modern Series |
Frequently Asked Questions
Will this barrel cycle both subsonic and supersonic .300 Blackout ammunition reliably?
Yes. The pistol-length gas system on this 10.5" barrel is specifically tuned for .300 Blackout, which was engineered to cycle reliably in short-barreled configurations. The 1:7" twist rate stabilizes both subsonic (typically 220gr) and supersonic (typically 110–125gr) loads. For suppressed subsonic use, an adjustable gas block is often recommended to fine-tune cycling, but many builds run reliably with a standard low-profile gas block.
Is this barrel compatible with a standard AR-15 lower receiver and upper?
Yes. This Ballistic Advantage barrel is compatible with any mil-spec AR-15 upper receiver. It uses a standard AR-15 barrel extension and M4 feed ramps, making installation straightforward with standard armorers tools. You will need a pistol-length gas tube and a gas block to complete the gas system assembly.
What muzzle devices or suppressors are compatible with the 5/8x24 threaded muzzle?
The 5/8x24 thread pitch is the standard for .300 Blackout and .308-diameter muzzle devices. This makes it compatible with a wide range of suppressors, muzzle brakes, compensators, and flash hiders from manufacturers such as SilencerCo, Dead Air, OSS, and many others. Always verify your suppressor or muzzle device is rated for .30-caliber use before attaching.
