FAXON DUTY SERIES GUNNER PROFILE 10.5" PISTOL-LENGTH 300 BLK AR15 BARREL
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FAXON DUTY SERIES GUNNER PROFILE 10.5" PISTOL-LENGTH 300 BLK AR15 BARREL
Faxon Duty Series — 10.5" Gunner 300 BLK AR-15 Barrel (Pistol-Length Gas)
4150 CMV • Button Rifled • Gunner Lightweight Profile • Nitride Inside & Out • MPI & Headspace Checked
The Faxon Duty Series 10.5" Gunner 300 BLK barrel combines exceptional balance and durability for short, versatile builds. Our Gunner profile merges the robustness of a Gov’t contour with the lightweight maneuverability of a Pencil profile—ideal for CQB, suppressed, or compact rifle setups.
Machined from 4150 CMV steel and button rifled with a 1:8 twist, each barrel is fully stress relieved and treated with salt bath nitride inside and out for superior corrosion resistance and long service life. Every Faxon barrel is air-gauge tested, MPI inspected, and headspace checked for reliability and accuracy straight out of the box.
Key Benefits
- Gunner Profile: Combines Gov’t strength with Pencil weight savings for excellent balance.
- Pistol-Length Gas: Optimized for 300 BLK reliability with subsonic and supersonic loads.
- 4150 CMV Construction: Mil-spec steel for rugged performance and heat resistance.
- Nitride Finish: Salt bath nitride inside & out enhances longevity and corrosion protection.
- Quality Control: Stress relieved, air-gauge tested, MPI, and headspace verified.
Specifications
Frequently Asked Questions
Will this barrel run both subsonic and supersonic ammo?
What muzzle devices can I use?
What’s the benefit of the Gunner profile?
Overview: 10.5" Duty Series Gunner 300 Blackout Barrel
The Faxon Duty Series 10.5" Gunner 300 BLK is a durable, accurate foundation for compact AR-15 builds. Its Gunner profile preserves strength where it counts and trims forward weight for excellent balance. Constructed from 4150 CMV with a 1:8 twist and nitride inside & out, it’s built for high round counts and easy maintenance.
Each barrel is stress relieved, air-gauge tested, magnetic particle inspected, and individually headspace checked. The .750" gas block journal, pistol-length gas, and 5/8x24 threads integrate seamlessly with modern .30-cal devices and suppressor systems—making it a top choice for do-it-all 300 BLK builds.