Ballistic Advantage 300 Blackout 10.3" AR-15 Barrel
Ballistic Advantage
$218.50
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Ballistic Advantage
Ballistic Advantage 300 Blackout 10.3" AR-15 Barrel
The Ballistic Advantage Premium Series 300 Blackout 10.3" Barrel delivers exceptional precision and reliability in a compact, suppressor-ready package — purpose-built for SBR and pistol-length AR builds demanding the best.
- Machined from 416R stainless steel for superior corrosion resistance and accuracy
- Bead blasted finish provides a clean, non-reflective matte appearance
- Nickel Boron coated M4 feed ramp extension ensures smooth, reliable feeding
- HP and MPI tested for consistent quality and structural integrity
- Pistol-length gas system optimized for 10.3" 300 Blackout ballistics
- 5/8x24 threaded muzzle ready for suppressors and muzzle devices
Who This Is For
This barrel is ideal for AR pistol builders, SBR enthusiasts, and home-defense-focused shooters who want to harness the hard-hitting performance of 300 Blackout in a compact, maneuverable platform. Whether you're running supersonic hunting loads or suppressed subsonic rounds, the 10.3" Hanson profile and Ballistic Advantage's Premium Series quality make this a top-tier choice for serious builders who refuse to compromise.
Specifications
| Brand | Ballistic Advantage |
|---|---|
| Series | Premium Series |
| Caliber | .300 Blackout |
| Length | 10.3" |
| Material | 416R Stainless Steel |
| Profile | Hanson |
| Finish | Bead Blasted |
| Twist Rate | 1:7" |
| Gas System | Pistol Length |
| Gas Block Journal | 0.750" |
| Gas Block Seat | 1.03" |
| Muzzle Thread | 5/8x24 |
| Feed Ramp | Nickel Boron Coated M4 |
| Testing | HP and MPI Tested |
Frequently Asked Questions
Will this barrel cycle both supersonic and subsonic 300 Blackout ammunition reliably?
Yes — the pistol-length gas system on this 10.3" barrel is specifically tuned to cycle a wide range of 300 Blackout loads, including both supersonic and subsonic ammunition. However, when running suppressed with heavy subsonic loads, an adjustable gas block is often recommended to fine-tune cycling and minimize bolt carrier velocity for optimal reliability.
What gas block size do I need for this barrel?
This barrel requires a low-profile gas block with a 0.750" inside diameter. It is not compatible with standard carbine or rifle-profile gas blocks. Make sure any gas block you choose is specifically sized for a 0.750" journal to ensure a proper fit and reliable gas seal.
Is this barrel compatible with standard AR-15 upper receivers and bolt carrier groups?
Yes. This Ballistic Advantage barrel is designed to drop into any standard mil-spec AR-15 upper receiver using a standard .300 Blackout bolt carrier group. Because .300 Blackout uses the same bolt face as 5.56/.223, your existing 5.56 BCG will work — just ensure your magazines and upper components are properly configured for 300 Blackout to avoid any feeding issues.
