Faxon Firearms144602136
Faxon Ar10 Barrel 308 Win - 20" 1:10 Big Gunner Profile$238.28
Availability: In Stock
The Faxon AR-10 barrel in .308 Win with the Big Gunner profile is a modern rifle barrel engineered for shooters who demand both reliability and performance in a semi-custom package. Built on the DPMS/LR-308 platform, this 16-inch barrel combines a purposeful taper design with practical details that work whether you're running competition, hunting, or a general-purpose rifle build. The Big Gunner profile refines Faxon's proven barrel architecture—thinner forward of the gas block for reduced weight without sacrificing the rigidity needed for consistent accuracy and fast follow-up shots.
What sets this barrel apart is its geometry. The .750" gas block journal at 1.9" in length accommodates standard and long-block gas systems alike, including aftermarket piston kits if you choose to go that route. Forward of the gas block, the taper progressively thins, cutting weight while maintaining the stiffness you want in a rifle that might see hard use or suppressor duty. The 1:10 twist rate is a versatile choice for .308 Winchester, handling the full range of commercially available ammunition without compromise.
Faxon manufactures this barrel from 4150 CMV steel and buttons-rifles the bore for consistency. Both the bore and exterior receive salt bath nitride treatment, a finish that resists corrosion and wear. The muzzle is crowned at 11 degrees and threaded 5/8x24 TPI—standard for most .308 suppressors and brakes. At 1.8 lbs, this 16-inch barrel is reasonably light without penalty. Each barrel is magnetic particle inspected before it ships. Note: Faxon strongly recommends verifying headspace with PTG gauges before you fire the rifle for the first time.
| Caliber | .308 Winchester |
| Barrel Length | 16 inches |
| Twist Rate | 1:10 |
| Profile | Big Gunner |
| Rifling | Button rifled |
| Material | 4150 CMV steel |
| Finish | Salt bath nitride (inside and out) |
| Muzzle Thread | 5/8x24 TPI |
| Muzzle Crown | 11-degree target crown |
| Gas Block Journal Diameter | .750 inch |
| Gas Block Journal Length | 1.9 inches |
| Barrel Extension | LR-308 (DPMS compatible) |
| Weight | 1.8 lbs |
| QC | Magnetic particle inspected |
This barrel is compatible with the DPMS/LR-308 platform and uses a .750" gas block journal. It's designed for AR-10 and similar large-frame AR rifles in .308 Winchester.
The muzzle is threaded 5/8x24 TPI, which is the standard for most .308 suppressors. Confirm your suppressor's thread pattern before purchase. The Big Gunner profile is optimized as a suppressor host, handling the added weight and back-pressure well.
The .750" gas block journal at 1.9" in length accommodates standard and long-block gas blocks, as well as most aftermarket piston kits. Choose a gas block compatible with .750" journal diameter; the 1.9" length allows flexibility for various designs.
Yes. Faxon strongly recommends verifying headspace using PTG headspace gauges before you fire the rifle. This is essential for safe operation and should be done with your specific bolt once the barrel is installed.
SKU: 144602088 • Width: 1.25in • Height: 1.25in • Depth: 17.1in • Weight: 2oz
Availability: In Stock
The Faxon AR-10 barrel in .308 Win with the Big Gunner profile is a modern rifle barrel engineered for shooters who demand both reliability and performance in a semi-custom package. Built on the DPMS/LR-308 platform, this 16-inch barrel combines a purposeful taper design with practical details that work whether you're running competition, hunting, or a general-purpose rifle build. The Big Gunner profile refines Faxon's proven barrel architecture—thinner forward of the gas block for reduced weight without sacrificing the rigidity needed for consistent accuracy and fast follow-up shots.
What sets this barrel apart is its geometry. The .750" gas block journal at 1.9" in length accommodates standard and long-block gas systems alike, including aftermarket piston kits if you choose to go that route. Forward of the gas block, the taper progressively thins, cutting weight while maintaining the stiffness you want in a rifle that might see hard use or suppressor duty. The 1:10 twist rate is a versatile choice for .308 Winchester, handling the full range of commercially available ammunition without compromise.
Faxon manufactures this barrel from 4150 CMV steel and buttons-rifles the bore for consistency. Both the bore and exterior receive salt bath nitride treatment, a finish that resists corrosion and wear. The muzzle is crowned at 11 degrees and threaded 5/8x24 TPI—standard for most .308 suppressors and brakes. At 1.8 lbs, this 16-inch barrel is reasonably light without penalty. Each barrel is magnetic particle inspected before it ships. Note: Faxon strongly recommends verifying headspace with PTG gauges before you fire the rifle for the first time.
| Caliber | .308 Winchester |
| Barrel Length | 16 inches |
| Twist Rate | 1:10 |
| Profile | Big Gunner |
| Rifling | Button rifled |
| Material | 4150 CMV steel |
| Finish | Salt bath nitride (inside and out) |
| Muzzle Thread | 5/8x24 TPI |
| Muzzle Crown | 11-degree target crown |
| Gas Block Journal Diameter | .750 inch |
| Gas Block Journal Length | 1.9 inches |
| Barrel Extension | LR-308 (DPMS compatible) |
| Weight | 1.8 lbs |
| QC | Magnetic particle inspected |
This barrel is compatible with the DPMS/LR-308 platform and uses a .750" gas block journal. It's designed for AR-10 and similar large-frame AR rifles in .308 Winchester.
The muzzle is threaded 5/8x24 TPI, which is the standard for most .308 suppressors. Confirm your suppressor's thread pattern before purchase. The Big Gunner profile is optimized as a suppressor host, handling the added weight and back-pressure well.
The .750" gas block journal at 1.9" in length accommodates standard and long-block gas blocks, as well as most aftermarket piston kits. Choose a gas block compatible with .750" journal diameter; the 1.9" length allows flexibility for various designs.
Yes. Faxon strongly recommends verifying headspace using PTG headspace gauges before you fire the rifle. This is essential for safe operation and should be done with your specific bolt once the barrel is installed.
SKU: 144602088 • Width: 1.25in • Height: 1.25in • Depth: 17.1in • Weight: 2oz