The Faxon Firearms Big Bore .458 SOCOM Barrel is a 10.5-inch Gunner Contour bare barrel from FAXON FIREARMS (brand part no. 15A45814P10NGQ) chambered in .458 SOCOM, a big-bore AR-15-pattern cartridge built for heavy, hard-hitting bullets at close to moderate range. Its 1-in-14 twist rate matches the slower stabilization needs of .458 SOCOM’s large-diameter bullets, and the Gunner Contour profile balances weight with barrel stiffness. It carries a nitride finish and is sold as a barrel only.

Key Specifications

• It is chambered in .458 SOCOM, a big-bore AR-15-pattern cartridge.
• It measures 10.5 inches long.
• It uses a 1-in-14 twist rate, matched to .458 SOCOM’s large-diameter bullets.
• It carries Faxon’s Gunner Contour profile.
• It has a nitride finish for corrosion resistance.

Frequently Asked Questions

Does this barrel make my AR-15 an SBR? No. A barrel sold on its own is not a regulated firearm. Installing this barrel on a complete, already-assembled rifle lower with a shoulder stock requires an approved ATF Form 1 before assembly; building it as a pistol with no stock avoids that requirement entirely.

What twist rate does .458 SOCOM need? This barrel uses a 1-in-14 twist, matched to stabilize .458 SOCOM’s large-diameter, heavy bullets.

Buy the Faxon Firearms Big Bore .458 SOCOM 10.5in Gunner Contour Barrel Nitride

Order the Faxon Firearms Big Bore .458 SOCOM 10.5in Gunner Contour Barrel Nitride through our AR15 barrels selection at Schaefer Defense and we will ship it fast, fully insured, from our Lubbock, TX gun shop.