The Faxon Firearms 5.56×45 NATO Barrel is a 10.5-inch Government/SOCOM profile bare barrel from FAXON FIREARMS (brand part no. 15A58C10NSQ-APGB) that ships with a low-profile gas block already pinned in place. The Government/SOCOM profile matches the classic step-down contour used on military carbine barrels, and its 1-in-8 twist rate handles a wide range of 5.56/.223 bullet weights. At 10.5 inches, it is a common length for AR pistol builds.

Key Specifications

• It is chambered in 5.56×45 NATO.
• It measures 10.5 inches long.
• It carries the Government/SOCOM profile, matching the classic step-down military carbine contour.
• It ships with a pinned, low-profile gas block already installed.
• It uses a 1-in-8 twist rate for a wide range of 5.56/.223 bullet weights.

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.

Do I need to install the gas block myself? No, the low-profile gas block is already pinned in place at the factory.

Buy the Faxon Firearms 5.56×45 NATO 10.5in Gov/SOCOM Barrel with Pinned Gas Block Nitride

Browse the Faxon Firearms 5.56×45 NATO 10.5in Gov/SOCOM Barrel with Pinned Gas Block Nitride in our rifle parts lineup and order through Schaefer Defense; our Lubbock, TX gun shop will get it moving to you as soon as it is ready to ship.