The One Horse OH-15 AR pistol in 5.56 NATO is a complete, ready-to-run pistol with a 10.5-inch medium-profile barrel (brand part no. OH-OP01). It combines a carbine-length gas system, a 9.25-inch M-LOK handguard and a KAK brace on a mil-spec buffer tube. One 30-round magazine is included, and the top rail is left open for your choice of optic. For range days, training and home defense, it is a straightforward, no-nonsense AR pistol.

Key Specifications

• Chambering is 5.56 NATO, a proven cartridge for a short AR-pattern pistol.
• Barrel length is 10.5 inches with a medium profile, a balance of handling and weight.
• Rate of twist is 1:8, a good match for a range of bullet weights.
• The gas system is carbine-length, which gives smooth cycling on a short barrel.
• The handguard is 9.25 inches with M-LOK slots, with room for a light, grip or other accessory.
• The brace is a KAK pistol brace, mounted on a mil-spec buffer tube.
• The muzzle device is an A2 flash hider on a 1/2×28 threaded muzzle.
• One 30-round magazine is included, a standard full-size AR magazine.
• The grip is an A2 pistol grip, a familiar shape that is easy to replace.
• The top rail is a full-length Picatinny rail, ready for a red dot or other optic.

Frequently Asked Questions

Does the OH-15 come with sights? No iron sights are installed. The full-length Picatinny top rail is ready for a red dot or other optic.

Is a magazine included? Yes. One 30-round magazine comes with the pistol.

Is the muzzle threaded? Yes. It carries an A2 flash hider on a 1/2×28 threaded muzzle.

Buy the One Horse OH-15 AR Pistol, 5.56 NATO, 10.5-Inch

One Horse built the OH-15 pistol as a complete gun rather than a kit, so it is ready to shoot as soon as you add an optic. The 10.5-inch barrel and carbine gas system give the pistol a mild, predictable feel in 5.56. Order it from our Lubbock, Texas gun shop for fast, insured shipping to your FFL, and see more AR pistols.