One Horse OH-15 Complete Rifle 5.56mm 16-inch

The One Horse OH-15 Complete Rifle is a 5.56 NATO carbine (One Horse part no. OH-OG02) built to be a do-everything workhorse that’s reliable, accurate, and ready for real-world use. It’s fitted with a 16-inch SOCOM-profile barrel with a 1:8-inch twist rate and a carbine-length gas system, threaded 1/2×28 and capped with an A2 muzzle device. The 15-inch handguard keeps the profile slim while giving shooters room for lights, optics, and other accessories, and a Mil-Spec buffer tube pairs with a One Horse M4 6-position stock for an adjustable length of pull. From range days and training to home defense and duty-grade use, the OH-15 delivers smooth cycling and consistent performance without draining your wallet.

Key Specifications

• Chambered in 5.56mm NATO, the standard AR-platform cartridge.
• Fitted with a 16-inch SOCOM-profile barrel.
• Uses a 1:8-inch twist rate for stabilizing a wide range of bullet weights.
• Threaded 1/2×28 and fitted with an A2 muzzle device.
• Runs a carbine-length gas system for reliable cycling.
• Wears a 15-inch handguard for mounting lights and accessories.
• Built with a Mil-Spec buffer tube and standard charging handle.
• Fitted with an A2 grip for a familiar, secure hold.
• Includes a One Horse M4 6-position stock for an adjustable length of pull.
• Feeds from a 30-round magazine included with the rifle.

Frequently Asked Questions

What caliber does the OH-15 shoot? It’s chambered in 5.56mm NATO, the standard AR-platform cartridge.

What twist rate does the barrel use? It uses a 1:8-inch twist rate, which stabilizes a wide range of 5.56 bullet weights.

Is the stock adjustable? Yes, the One Horse M4 stock adjusts across 6 positions for length of pull.

Buy the One Horse OH-15

Shooters who want a dependable, do-everything 5.56 carbine without overspending should look closely at the OH-15. Order this One Horse rifle from our AR rifle selection at Schaefer Defense, and we’ll ship it insured to your local FFL from our Lubbock, Texas shop.