One Horse SOCOM 5.56 NATO AR-15 Barrel - Mid-Length - 16"

Mid-length gas and the SOCOM profile — two upgrades over a standard carbine build in one barrel. The One Horse SOCOM Barrel brings a mid-length gas system's smoother recoil impulse and reduced bolt carrier velocity to a 16-inch 5.56 AR-15, with the heavier SOCOM contour adding rigidity and heat capacity for sustained fire sessions.

The One Horse SOCOM Barrel is a 16-inch AR-15 barrel chambered in 5.56 NATO, machined from 4150 steel with a SOCOM profile on a mid-length gas system and a 1:8 twist rate, built to mil-spec standards for high-volume shooting and tactical applications.

Three features differentiate this barrel from a standard carbine-length M4 build. The mid-length gas system provides a longer dwell time and lower operating pressure than a carbine gas system on the same 16-inch barrel, producing a softer recoil impulse, reduced bolt carrier velocity, and less wear on the buffer system over high round counts. The SOCOM barrel profile is heavier than a standard M4 contour under the handguard, adding thermal mass that absorbs heat more effectively during sustained fire and improving point-of-impact consistency when the barrel heats up. A 1:8 twist rate sits between the traditional 1:7 and 1:9 options, providing excellent stabilization for mid-weight 5.56 projectiles from 55 to 75 grains while supporting modern heavier-bullet loads.

Compatible with mil-spec AR-15 upper receivers and mid-length gas systems. 1/2x28 threaded muzzle.

4150 steel. SOCOM profile. Mid-length gas. 1:8 twist. Built to mil-spec.

Ideal for duty AR-15 builds, high-volume training setups, and any 16-inch configuration where mid-length gas reliability and SOCOM-profile heat management improve sustained shooting performance.

By One Horse. Made in the USA. Standard manufacturer warranty applies.