Faxon Duty Series 10.5" Gunner 300 BLK Barrel (Pistol-Length)

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

• Caliber / Chamber: 300 Blackout (300 BLK)
• Length: 10.5"
• Profile: Gunner
• Gas System: Pistol-Length
• Material: 4150 CMV
• Rifling Method: Button-Rifled; 1:8 Twist
• Finish: Salt Bath Nitride (inside & out)
• Muzzle Threads: 5/8x24
• Gas Block Diameter: .750"
• Gas Block Journal Length: 1.9"
• Barrel Extension: M4
• Weight: 1.10 lbs
• Crown: 11° Target Crown