FAXON DUTY SERIES GUNNER PROFILE 16" MID-LENGTH .308 WIN AR10 BARREL
Faxon
$239.00
(4 reviews)
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Faxon
FAXON DUTY SERIES GUNNER PROFILE 16" MID-LENGTH .308 WIN AR10 BARREL
Faxon Duty Series — 16" Big Gunner Profile .308 Win AR-10 Barrel
4150 CMV Steel • 1:10 Twist • Big Gunner Profile • Salt Bath Nitride • 5/8x24 Threads • Mid-Length Gas
The Faxon Duty Series 16" Big Gunner .308 Win Barrel is built for shooters who demand duty-grade reliability and precision from their AR-10 platform. As the full-length evolution of our Big Gunner line, it combines battle-ready ruggedness with match-level performance—all manufactured 100% in-house by Faxon Firearms in Cincinnati, Ohio.
Each barrel is machined from 4150 CMV steel and treated inside and out with a durable Salt Bath Nitride (QPQ) finish. The Big Gunner profile tapers behind the gas block for optimal stiffness, while forward sections reduce weight for improved balance—making it ideal as a suppressor host or precision-duty carbine.
Engineered for LR-308 / DPMS-pattern receivers, this 16” mid-length barrel delivers exceptional accuracy, reliability, and handling for professional, competition, or tactical applications.
Key Benefits
- Big Gunner Profile: Medium-taper for stiffness behind the gas block with lighter weight forward for balance and control.
- 4150 CMV Steel: Duty-grade material for heat resistance and longevity under sustained fire.
- 1:10 Twist Rate: Ideal for a wide range of .308 Win bullet weights.
- Salt Bath Nitride Finish: Corrosion and wear resistant inside and out for long service life.
- Mid-Length Gas System: Balanced dwell time for smoother recoil and consistent cycling.
- 5/8x24 Muzzle Threads: Standard for .30-cal muzzle devices and suppressors.
- DPMS-Compatible Extension: Fits LR-308 receivers and components.
- Individually MPI & Headspaced: Each barrel is magnetic particle inspected and precision headspaced with PTG gauges.
Specifications
Important Product Note
Faxon Firearms Duty Series barrels are designed for reliability, durability, and precision. Ensure correct headspacing and gas system alignment when installing on DPMS Gen 1-pattern receivers. Faxon recommends professional gunsmith installation to guarantee safety and performance. Improper installation or incompatible components may cause damage or void warranty.
Frequently Asked Questions
What is the Big Gunner Profile?
Faxon’s Big Gunner profile uses a medium-taper design that maintains rigidity behind the gas block while reducing forward weight for superior handling and heat control.
Will this fit my AR-10 upper?
Yes, it’s compatible with LR-308 / DPMS-pattern uppers using standard .308 BCGs and gas components.
Is this barrel suppressor-ready?
Yes. The 5/8x24 muzzle threads support most .30-caliber muzzle devices and suppressors rated for .308 Winchester.
Overview: 16" Duty Series Big Gunner .308 Win Barrel
The Faxon Duty Series 16" Big Gunner .308 Win Barrel is built to exceed expectations for accuracy, balance, and durability. Its mid-length gas system ensures smooth recoil and dependable cycling, while the 4150 CMV construction and salt bath nitride finish provide years of consistent performance. Whether for precision duty builds, competition rigs, or suppressed carbines, this barrel delivers the perfect mix of strength and agility.
Every Faxon barrel is proudly made in Cincinnati, Ohio, and undergoes stress-relieving, magnetic particle inspection, and precise headspacing to guarantee superior quality from the first round to the last.
- Barrel Material:
- 4150 CMV
- Barrel Type:
- Button Rifled
- Caliber:
- .308 WIN
- Barrel Length:
- 16"
- Barrel Twist:
- 1:10
- Barrel Profile:
- Big Gunner
- Barrel Gas System:
- Mid
- Outside Finish:
- QPQ Nitride
- Muzzle Thread:
- 5/8x24
- Gas Block Diameter:
- .750"
- Gas Block Journal Length:
- 1.9"
- Barrel Extension:
- LR-308 (DPMS Compatible)
- Barrel Weight:
- 1.91 lbs
- Crown Type:
- Recessed 11-degree Target Crown
Reviews
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Performance Exceeded Expectations
This 16" barrel blows my OEM 20" out of the water. I almost gave up on the AR10 this went on but I have renewed faith in it now. Thank you Faxon!
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The 16” 308 pencil barrel
Install on barrel was as easy as it gets, no malfunctions, timed suppressor within 15 rounds, accuracy was very good. I’m very pleased with the performance and overall quality of the product.
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Faxon 16" 308 Big Gunner Barrel
This Big Gunner is my 3rd Faxon barrel. I've tried other barrels with some costing considerably more and Faxon has them all beat. Every Faxon barrel has been dead on right out of the box. No reason to use any other. Happy customer !
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Pleasantly surprised
SA adjustable gas block and remainder mostly aero parts. Very balanced setup due to the light profile. Accuracy: 1 -1.2 175gr SMK Various loads including GMM, 0.5 168gr SMK GMM, did not like m80 loads. The SA gas block was not able to adjust via bleed off...had to dial in using restrictive setting. Overall very pleased with the performance and weight of this barrel.