Description
There's a lot to like about a straightforward AR that just runs, and that's exactly what the One Horse OH-15 is going for. This is a complete 5.56 NATO carbine built in the USA with mil-spec components, a 16 inch SOCOM-profile barrel, and a carbine-length gas system that keeps the whole package light and quick handling. Chambered for 5.56 NATO, it also feeds .223 Remington without a fuss, which means cheap range ammo one weekend and quality defensive loads the next, all through the same rifle.
What the OH-15 Brings to the Table
The 15 inch free-float M-LOK handguard is the standout feature at this end of the market. It covers nearly the full length of the barrel, giving you a long, comfortable grip surface and plenty of real estate for a light, sling mount, or hand stop wherever you like them. Up front you get a 1/2×28 threaded muzzle with an A2 flash hider, so swapping to a different muzzle device or adding a suppressor down the road is simple. The 6-position adjustable stock rides on a mil-spec buffer tube, and the whole rifle accepts standard AR-15 parts, which makes it an easy platform to customize as your needs change. A 30-round Magpul magazine comes in the box, and it takes common AR mags from there.
Where the One Horse OH-15 Fits
This is the rifle for range days, training classes, home defense duty, or just having a dependable 5.56 on hand without spending big money. One Horse builds their rifles and components in America with US-sourced materials, and this carbine reflects that no-frills approach: proven configuration, solid parts, nothing gimmicky. If it's your first AR, it covers all the bases. If it's your fifth, it makes a great truck gun or loaner that you won't baby. Either way, mount an optic, zero it, and go shoot.
Key Specifications
- Model: OH-15
- Manufacturer Part Number: OH-OG02
- UPC: 850078799708
- Caliber: 5.56 NATO / .223 Rem
- Action: Semi-Automatic
- Barrel Length: 16 in
- Barrel Profile: SOCOM
- Twist Rate: 1:8
- Gas System: Carbine-Length
- Muzzle Device: A2 Flash Hider, 1/2×28 Thread
- Handguard: 15 in Free-Float M-LOK
- Stock: 6-Position Adjustable, Mil-Spec Buffer Tube
- Capacity: 30 Rounds
- Country of Origin: USA
- Shipping Weight: 8.4 lbs
What’s Included
- One Horse OH-15 complete rifle
- 1 x 30-round Magpul magazine
Frequently Asked Questions
Can the One Horse OH-15 shoot both 5.56 NATO and .223 Remington?
Yes. The OH-15 is chambered in 5.56 NATO, which means it safely handles both 5.56 and .223 Remington ammunition. That gives you plenty of flexibility, from budget-friendly plinking ammo to premium defensive loads. Brass-cased ammo from reputable brands tends to give the most consistent cycling.
Is the OH-15 compatible with standard AR-15 parts and magazines?
It is. The OH-15 is built to mil-spec dimensions, so it accepts common AR-15 magazines, stocks, triggers, grips, and other components. The 15 inch M-LOK handguard also gives you plenty of mounting space for lights, sling attachments, and other accessories without needing any special adapters.
Where is the One Horse OH-15 made?
One Horse builds its rifles and components in the United States using US-sourced materials. The company puts an emphasis on domestic manufacturing and quality control across its whole lineup, and the OH-15 carbine follows that same approach.
Can I add a suppressor or different muzzle device to this rifle?
Yes. The 16 inch barrel comes threaded 1/2×28 with a standard A2 flash hider installed, which is the most common thread pitch for 5.56 muzzle devices. Swapping to a brake, comp, or suppressor mount is a quick job with basic tools.




Reviews
There are no reviews yet.