FAXON PINNED GAS BLOCK GUNNER PROFILE 10.5" PISTOL-LENGTH 300 BLK AR15 BARREL
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FAXON PINNED GAS BLOCK GUNNER PROFILE 10.5" PISTOL-LENGTH 300 BLK AR15 BARREL
Faxon Pinned Gas Block — 10.5" Gunner Profile 300 BLK AR-15 Barrel (Pistol Gas)
Factory pre-pinned .750" gas block included for rock-solid reliability and fast installs.
The Faxon 10.5" 300 Blackout Gunner Barrel with Pinned Gas Block removes the hardest part of short-barrel builds: correctly pinning the gas block. We pre-notch the journal, drill the block, and include the pin—so your gas system won’t shift or loosen under fire.
Built from 4150 CMV steel with a nitride finish, this Gunner profile blends Gov’t durability with Pencil-like weight savings for superb handling. Pistol-length gas optimizes function with both supers and subs (especially suppressed), while 1:8 twist stabilizes a wide range of 300 BLK projectiles.
Key Benefits
- Factory-pinned .750" gas block: Pre-drilled and aligned for maximum security and easy installation.
- Gunner profile balance: Gov’t strength with Pencil weight for faster transitions and reduced fatigue.
- Pistol-length gas: Reliable cycling with subsonic and supersonic 300 BLK, ideal for suppressed builds.
- Duty-ready construction: 4150 CMV, button-rifled 1:8, and QPQ nitride inside & out.
- Precision QC: Stress relieved, air-gauge tested, MPI-inspected, and headspace verified in-house.
Specifications
Included: Barrel, low-profile gas block (hand-tightened for shipping), and retaining pin.
Frequently Asked Questions
Is the gas block already pinned?
Will this run subsonic and supersonic ammo?
What muzzle devices fit?
Overview: 10.5" Pinned Gas Block Gunner 300 BLK Barrel
The Faxon Pinned Gas Block 10.5" 300 BLK Gunner Barrel gives builders a dependable, accuracy-focused barrel with a gas system that won’t budge. With its lightweight-forward Gunner contour, pistol-length gas, and corrosion-resistant nitride treatment, it’s a top choice for compact carbines—especially when running suppressed.
Every barrel is stress relieved, air-gauge tested, magnetic particle inspected, and headspace checked to deliver the quality and consistency Faxon Firearms is known for.