Faxon Firearms Big Gunner Barrel Features The Faxon Firearms Big Gunner Barrel updates the previous medium-taper profile based on customer feedback optimizing the barrel to meet the Gunner brand s high accuracy and durability standards for .308-caliber AR builds. The .750 gas block journal is compatible with most common gas blocks and the 1.9 journal length accommodates long blocks or aftermarket piston kits without additional fitting. Machined from 4150 CMV steel and button rifled with a 1:10 twist the barrel is built for high round counts without losing accuracy over time. The LR-308 DPMS-compatible extension ensures straightforward compatibility with popular .308 AR platforms already on the market. Ahead of the gas block journal Faxon uses a thinner taper designed specifically to reduce weight while maintaining the rigidity needed for sustained rates of fire and use as a suppressor host. The barrel is finished with Salt Bath Nitride both inside and out providing corrosion resistance and a smooth bore surface that eases cleaning and extends service life. An 11-degree target crown and magnetic particle inspection process ensure each barrel meets Faxon s accuracy and quality standards before shipping. For competition shooters and duty-focused builders who want a .308 AR barrel that performs when seconds count the Big Gunner Barrel is purpose-built for the job. Faxon Firearms Big Gunner Barrel Specifications Brand: Faxon Firearms Model: Big Gunner Type: AR Rifle Barrel Caliber: .308 Win Barrel Length: 13.9 Barrel Profile: Big Gunner Barrel Material: 4150 CMV Rifling: Button Rifled Twist Rate: 1:10 Finish: Salt Bath Nitride Muzzle Thread: 5/8x24 TPI Gas System: Rifle Gas Block Diameter: .750 Barrel Extension: LR-308 (DPMS Compatible) Weight: 1.8 lbs Available At: GrabAGun