The Faxon Firearms 5.56 NATO 16-inch 1-8 Gov/SOCOM barrel with pinned gas block is a complete upper receiver barrel solution built for AR-15 builders who want accuracy, reliability, and simplified assembly in one package. Faxon manufactures these barrels in-house using 4150 CMV steel, stress-relieved and individually headspace-checked for consistency shot to shot. The 1-8 twist rate handles a wide range of 5.56 loads—from lighter varmint rounds to heavier match ammunition—making it a versatile choice for hunting, long-range precision work, or tactical training. The mid-length gas system paired with the 16-inch profile strikes a balance between velocity, handling, and controllability that works well for intermediate-distance work.

What sets this barrel apart is the pinned gas block design. Instead of relying on set screws alone, Faxon pre-notches the gas block journal and drills corresponding holes in the included low-profile gas block, then secures them with a pin. That means your gas block stays put—no creep, no shift under recoil, no doubt. The barrel comes with the pin and gas block already fitted; just hand-tighten during assembly and you're done. It's a smart solution to a real problem that saves you headache and worry on the range or in the field.

Every Faxon barrel goes through a rigorous test battery: air-gauge testing, magnetic particle inspection, and an 11-degree target crown for precision. The nitride finish inside and out provides excellent corrosion resistance and durability with minimal maintenance. Muzzle threads are 1/2-28, standard for AR-platform suppressors and muzzle devices. Whether you're assembling a DMR, a hunting upper, or a general-purpose rifle, this barrel delivers Faxon's reputation for in-house quality control at a genuine value price point.

The Faxon Firearms 5.56 NATO 16-inch 1-8 Gov/SOCOM barrel with pinned gas block is a complete upper receiver barrel solution built for AR-15 builders who want accuracy, reliability, and simplified assembly in one package. Faxon manufactures these barrels in-house using 4150 CMV steel, stress-relieved and individually headspace-checked for consistency shot to shot. The 1-8 twist rate handles a wide range of 5.56 loads—from lighter varmint rounds to heavier match ammunition—making it a versatile choice for hunting, long-range precision work, or tactical training. The mid-length gas system paired with the 16-inch profile strikes a balance between velocity, handling, and controllability that works well for intermediate-distance work.

What sets this barrel apart is the pinned gas block design. Instead of relying on set screws alone, Faxon pre-notches the gas block journal and drills corresponding holes in the included low-profile gas block, then secures them with a pin. That means your gas block stays put—no creep, no shift under recoil, no doubt. The barrel comes with the pin and gas block already fitted; just hand-tighten during assembly and you're done. It's a smart solution to a real problem that saves you headache and worry on the range or in the field.

Every Faxon barrel goes through a rigorous test battery: air-gauge testing, magnetic particle inspection, and an 11-degree target crown for precision. The nitride finish inside and out provides excellent corrosion resistance and durability with minimal maintenance. Muzzle threads are 1/2-28, standard for AR-platform suppressors and muzzle devices. Whether you're assembling a DMR, a hunting upper, or a general-purpose rifle, this barrel delivers Faxon's reputation for in-house quality control at a genuine value price point.