One Horse OH-15 300 Blackout Pistol – 10.5″ Barrel, KAK Brace, 30-Round Magazine, Black

The One Horse OH-15 in 300 AAC Blackout delivers serious performance in a compact, pistol-configuration AR platform. Built around a 10.5-inch barrel, this pistol is optimized for the ballistic advantages of 300 Blackout — a cartridge renowned for its versatility with both supersonic and subsonic loads, and its exceptional performance in shorter barrel lengths. The KAK stabilizing brace provides a comfortable, secure shooting experience while keeping this build legally configured as a pistol. Loaded with a 30-round magazine and finished in an all-black configuration, the OH-15 is ready for home defense, range sessions, hunting, or suppressor-ready use right out of the box.

Whether you’re a first-time buyer exploring the 300 Blackout platform or an experienced shooter looking for a capable and affordable AR pistol, the One Horse OH-15 delivers reliable performance at a competitive price point. Deep Roots Rifle Co carries hard-to-find firearms like this one, backed by knowledgeable staff who can answer your questions and help you make the right choice.

Order online through deeprootsrifleco.com with fast shipping to your FFL, or stop by our gun store in Eustis, Florida to see our full inventory in person. Our team is here to help you find exactly what you need.