One Horse OH-CL01 AR15 Complete Lower Receiver 5.56 / .300 AAC Blackout

The One Horse OH-CL01 Complete Lower Receiver delivers a rock-solid foundation for your next AR-15 build. Forged from 7075-T6 aluminum and precision-machined and finished with a Mil-Spec hardcoat anodized surface, this lower receiver is engineered to withstand the rigors of hard use while resisting corrosion and wear. Multi-caliber compatibility means you can pair it with uppers chambered in 5.56 NATO or .300 AAC Blackout, giving you versatility in a single platform.

This complete lower arrives fully assembled and function-tested, eliminating the guesswork and ensuring reliable performance right out of the box. The Mil-Spec buffer tube pairs with a standard M4 6-position adjustable stock, allowing shooters to customize length of pull for optimal comfort and control. A classic A2-style pistol grip provides a familiar, ergonomic interface, while the single-stage trigger offers consistent, predictable performance.

Proudly made in the U.S.A., the OH-CL01 is designed to pair seamlessly with any Mil-Spec AR-15 upper receiver. Whether you're building a dedicated range rifle, a home defense carbine, or a versatile all-purpose firearm, this complete lower provides the quality and compatibility you need. FFL required for transfer.