Faxon Firearms 10.5 inch Gunner Big Bore Profile Barrel Pistol-Length .458 Socom 1-14 Twist 11/16x24 4150 Steel Nitride Black. Manufactured 100 percent in-house from cradle-to-grave these barrels are fully stress relieved air-gauge tested and 11 degree target crowned to ensure superior accuracy. Quality is imbued into our barrels from the start. We start with the best materials either certified 4150 Mil-Spec steel or 416-R Stainless. From there each barrel goes through a battery of tests at each operation until finished in Nitride and final inspected. All barrels are individually checked for headspace by precision custom hardened gauges. Barrel Material: 4150 CMV Barrel Type: Button Rifled Barrel Caliber: 458 Socom Barrel Twist: 1:14 Barrel Length: 10.5" Barrel Profile: Gunner Big Bore Barrel Gas System: Pistol Inside Finish: Nitride Outside Finish: Nitride Muzzle Thread: 11/16x24 Gas Block Diameter: .875 Gas Block Journal Length: 1.1" Magnetic Particle Inspected 11-degree Target Crown Specifications for Faxon Firearms 10.5 inch Gunner Big Bore Profile .458 Socom Barrel: Manufacturer: Faxon Firearms Color: Black Nitride Finish: Nitride Fabric/Material: 4150 Steel Caliber: .458 SOCOM Barrel Length: 10.5 in Barrel Profile: Gunner Gas System Length: Pistol Length Gas Block Journal Size-Diameter: .875 in Threads per Inch: 11/16x24 Barrel Twist Rate: 1-14 Barrel Material: 4150 Chrome Moly Vanadium Flutes: No Gun Make: AR Platform Gun Model: AR-10 Weight: 1.5 lb Gas Block Journal Size-Length: 1.9 in Gun Type: Rifle Features of Faxon Firearms 10.5 inch Gunner Big Bore Profile .458 Socom Barrel: Barrel Material: 4150 CMV Steel Barrel Type: Button Rifled Barrel Caliber: 458 Socom Barrel Twist: 1:14 Barrel Length: 10.5" Barrel Profile: Gunner Big Bore Barrel Gas System: Pistol Inside Finish: Nitride Outside Finish: Nitride Muzzle Thread: 11/16x24 TPI Gas Block Diameter: .875 Gas Block Journal Length: 1.1" Weight: Magnetic Particle Inspected 11-degree Target Crown Package Contents: Faxon Firearms 10.5 inch Gunner Big Bore Profile .458 Socom Barrel What firearm models does the manufacturer say Faxon Firearms 10.5 inch Gunner Big Bore Profile .458 Socom Barrel is compatible with? The manufacturer suggests that Faxon Firearms 10.5 inch Gunner Big Bore Profile .458 Socom Barrel is compatible with AR-10Faxon Firearms 15A45814P10NGQ: 10.5 inch Gunner Big Bore Profile Barrel Pistol-Length .458 Socom 1-14 Twist 11/16x24 4150 Steel Nitride Black