The One Horse OH-15 Complete Rifle 6mm ARC pairs an 18-inch HBAR threaded barrel with a slim 15-inch M-LOK handguard to deliver consistent accuracy and smooth cycling in a modern AR-15 package. Chambered in 6mm ARC and capped with an A2 muzzle device, this semi-automatic carbine is built around a mid-length gas system, Mil-Spec buffer tube, A2 grip, and One Horse M4 6-position stock for a familiar feel and adjustable length of pull.

This configuration is ideal for stretching steel at distance, running a suppressor, or building a capable home-defense and range rifle that stays controllable and flat shooting. The 30-round 6mm ARC-compatible magazine and standard AR controls make it approachable for experienced shooters and new AR owners alike, while One Horse’s attention to detail and American-made craftsmanship give the OH-15 a refined, reliable character.

• Manufacturer: One Horse
• Model: OH-15
• Caliber: 6mm ARC
• Action: Semi-Auto
• Barrel Length: 18 in.
• Number of Magazines: 1
• Capacity: 30
• Threaded Barrel: Yes, 5/8x24 with A2 muzzle device