One Horse OH-15 5.56 NATO - 16" - 1x 30 Round Magazine - AR-15 Rifle

The One Horse OH-15 is a complete 16-inch 5.56 NATO AR-15 built in the USA — SOCOM profile barrel with 1:8 twist and mid-length gas, mil-spec buffer tube, A2 grip, One Horse M4 six-position stock, nitride BCG, and a 30-round magazine included, built for range, home defense, and training use without unnecessary complexity.

The One Horse OH-15 is a complete semi-automatic 5.56 NATO AR-15 rifle built in the USA, featuring a 16-inch SOCOM profile barrel with 1:8 twist, mid-length gas system, mil-spec buffer tube, A2 grip, One Horse M4 six-position adjustable stock, and a 30-round magazine. Weight: 7.14 lbs. Muzzle thread: 1/2x28. All components US-sourced and manufactured.

The OH-15 is One Horse's complete rifle package — their workhorse AR-15 built to the same USA-sourced, USA-manufactured standard as their upper receiver groups, in a full rifle configuration that delivers everything needed to run from the box. The SOCOM barrel profile is the most common AR-15 barrel contour — it provides a good balance of weight, rigidity, and heat-handling capacity for general-purpose use without the excess weight of a heavy-profile government barrel or the reduced rigidity of a pencil profile. The 1:8 twist handles the widest practical range of 5.56 and .223 projectile weights, stabilizing everything from 55-grain standard loads through 77-grain match bullets — the most versatile twist rate available in this caliber. The mid-length gas system produces a more gradual, consistent gas impulse than carbine-length gas on a 16-inch barrel, improving cycling consistency across different ammunition types and reducing felt bolt carrier impulse for more comfortable extended firing. The mil-spec buffer tube accepts the full range of AR-15 collapsible stocks. The six-position stock allows length-of-pull adjustment for different builds and shooting positions, and the A2 grip is the mil-spec standard that provides a functional, proven baseline. The 7.14-pound weight is practical for a complete rifle with a standard-profile barrel and full-length handguard. One Horse uses US-sourced materials and US manufacturing throughout with quality control at every step. One 30-round magazine ships with the rifle.

Caliber: 5.56 NATO. Barrel: 16-inch SOCOM profile, 1:8 twist, 1/2x28 thread. Gas: mid-length. Buffer tube: mil-spec. Grip: A2. Stock: One Horse M4 six-position. Weight: 7.14 lbs. Magazine: 30-round included. Origin: Made in USA, US-sourced materials.

1:8 twist stabilizes the widest practical range of 5.56/.223 projectile weights — 55 to 77 grains — the most versatile twist rate in the caliber. Mid-length gas on 16-inch barrel provides a more consistent cycling impulse than carbine-length gas for improved reliability across ammunition types. SOCOM profile balances weight and rigidity for general-purpose use. All US-sourced materials, US manufacturing. 30-round magazine included.

The right complete AR-15 for buyers who want a USA-built 16-inch 5.56 workhorse without unnecessary additions — 1:8 twist SOCOM barrel, mid-length gas, six-position stock, nitride BCG, and a 30-round magazine ready to run.