One Horse OH-15 .300 Blackout Rifle, 16-inch M-LOK

The One Horse OH-15 Rifle (One Horse part no. OH-OG04) is a complete AR-platform rifle chambered in .300 AAC Blackout, built with a 16-inch black threaded barrel and a black receiver topped with a Picatinny rail. This OH-15 features an M-LOK handguard for accessory mounting, a One Horse M4 6-position collapsible stock, a black A2 grip, and an A2 flash hider, giving shooters a complete, ready-to-run rifle rather than a stripped platform requiring further assembly. With a 30-round magazine included, it’s built for home defense, range use, or hunting where .300 Blackout’s versatility across subsonic and supersonic loads shines.

Key Specifications

• Chambered in .300 AAC Blackout, a versatile cartridge for both subsonic and supersonic loads.
• Runs a 16-inch, black threaded barrel with a 1:8 twist rate.
• Holds 30 rounds, with a 30-round magazine included.
• Features an M-LOK handguard for mounting lights, optics, and other accessories.
• Equipped with a 6-position collapsible stock for an adjustable length of pull.
• Includes an A2 flash hider on the threaded muzzle.
• Runs a reliable semi-automatic action on the AR-15 platform.
• Ships at approximately 9.4 lbs.
• Fitted with a black A2 grip for a proven, no-frills grip surface.

Frequently Asked Questions

Does this rifle come with a magazine? Yes, it includes a 30-round magazine.

Is the barrel threaded? Yes, it has a threaded 16-inch barrel with an A2 flash hider installed.

Buy the One Horse OH-15 .300 Blackout Rifle

Get a complete, ready-to-run .300 Blackout AR rifle without any additional assembly required. Order the One Horse OH-15 from our Lubbock, Texas gun shop for fast, insured shipping to your FFL as soon as it’s ready to ship, from our AR rifles lineup.