Faxon Duty Series 18 inch .308 Win AR10 Gunner profile barrel with rifle-length gas

FAXON DUTY SERIES GUNNER PROFILE 18" RIFLE-LENGTH .308 WIN AR10 BARREL

Faxon
SKU:
10A810R18NGQ
|
UPC:
816341023284
Availability:
Usually ships within 2 business days when available.
$238.00
(5 reviews)
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Description

 

Faxon Duty Series AR10 Barrel — Gunner Profile 18" .308 Win (1:10 Twist, Rifle Gas)

4150 CMV steel • Standard button rifled • Salt bath nitride (QPQ) inside & out • Gunner (Big Gunner) profile • Black oxide extension • 11° target crown (non-recessed) • Rifle-length gas • .750" gas block journal • 1.9" journal length • 5/8x24 TPI • MPI inspected

The Faxon Duty Series Gunner Profile 18" .308 Win AR10 barrel is built for shooters who want a balanced .308 setup with smooth recoil and duty-grade reliability. The rifle-length gas system on an 18-inch barrel delivers a soft impulse and broad tuning flexibility, while the Gunner contour keeps weight and handling in check for practical rifles that still need reach.

Duty Series barrels start with 4150 CMV steel and standard button rifling, then receive QPQ salt bath nitride inside and out for strong corrosion resistance and long service life. The Gunner (Big Gunner) profile uses a sturdier taper behind the gas block for rigidity and a slimmer forward section to reduce front-end weight—an excellent combination for general-purpose builds and suppressor-ready setups.

Proudly American-made by a family-owned manufacturer in Greater Cincinnati, Ohio, each barrel is built for consistent performance and backed by the Faxon standard of quality.

Key Benefits

  • Gunner (Big Gunner) balance: Medium taper behind the gas block for stability with reduced forward weight for handling.
  • 4150 CMV steel: Duty-grade strength and heat tolerance for real-world use.
  • QPQ nitride inside & out: Corrosion and wear resistance for long service life.
  • Rifle-length gas: Smooth recoil impulse and consistent cycling on 18" builds.
  • 11° target crown (non-recessed): Clean, repeatable shot exit for consistency.
  • 5/8x24 muzzle threads: Standard interface for .30-cal muzzle devices and suppressors (verify alignment/mount specs).
  • MPI inspected: Quality control focused on dependable performance.

Ideal Use Cases

  • General-purpose AR10 builds: A versatile 18" .308 configuration with rifle-gas smoothness.
  • Field & hunting rifles: Balanced profile for carry comfort and practical accuracy.
  • Training & high-use setups: QPQ protection helps resist corrosion and wear.
  • Suppressor-ready builds: 5/8x24 threads support common .30-cal devices (verify suppressor rating and alignment).

Specifications

Platform / Series
AR10 — Duty Series
Caliber
.308 Win
Length
18"
Profile
Gunner (Big Gunner)
Twist Rate
1:10
Material
4150 CMV Steel
Rifling
Standard Button Rifled
Finish
Salt Bath Nitride (QPQ) — inside & out
Gas System
Rifle-length
Gas Block Diameter
.750"
Gas Block Journal Length
1.9"
Muzzle Threads
5/8x24 TPI
Extension
DPMS / LR-308 Compatible — Black Oxide
Crown
11° Target Crown (non-recessed)
Inspection
Magnetic Particle Inspected (MPI)
MSRP
$238.00

Build note: Always verify receiver/bolt compatibility, headspace, and muzzle-device alignment prior to use.

Frequently Asked Questions

What is the Gunner (Big Gunner) profile?
It’s a balanced contour with a sturdier taper behind the gas block for rigidity and a slimmer forward section to reduce front-end weight—great for practical rifles and suppressor-ready setups.
How is Duty Series different from Match Series?
Duty Series uses 4150 CMV with standard button rifling and QPQ treatment for rugged, dependable performance and value in real-world conditions. Match Series uses 416-R stainless and 5R rifling for precision-focused builds—different use cases, both made to Faxon standards.
Is this barrel compatible with DPMS / LR-308 pattern receivers?
Yes. This barrel is built for DPMS / LR-308 compatibility. Confirm fitment with your receiver set, bolt, and gas components prior to installation.
Is it suppressor-ready?
Yes. The 5/8x24 muzzle threads fit most .30-cal muzzle devices and suppressors rated for .308 Winchester. Always verify alignment and suppressor caliber rating.

Warranty: Backed by the Faxon Lifetime Guarantee. Full details available at https://faxonfirearms.com/warranty-privacy-terms/

 

 

Warranty Faxon Lifetime Guarantee. Covers manufacturing and material defects to the original purchaser. Excludes damage from misuse, neglect, non-standard ammunition, or modifications. Register your product at faxonfirearms.com/product-registration to expedite service. For purchases through dealers or distributors, warranty repairs are handled directly by Faxon Firearms; refunds must be processed through the selling entity. Full policy: faxonfirearms.com/warranty-privacy-terms/