One Horse OH-15 Complete Lower 5.56 / .300 AAC Blackout

The One Horse OH-15 Complete Lower is a mil-spec aluminum lower receiver assembly built for reliability, compatibility, and straightforward AR-15 configuration. Machined to true mil-spec dimensions, it pairs seamlessly with any mil-spec AR-15 upper across a wide range of calibers without fitting or modification. The included mil-spec buffer tube supports the One Horse M4 6-position adjustable stock, allowing shooters to tailor length of pull for comfort and control. The black finish provides corrosion resistance and a clean, professional appearance suited for any build.

In use, the OH-15 Complete Lower provides a ready-to-run foundation that eliminates the need to source and install individual components. The One Horse M4 stock delivers durable, weather-resistant performance, while the classic A2 grip offers familiar ergonomics trusted by AR shooters for decades. Compatible with calibers ranging from 5.56 NATO and 300 Blackout to 6mm ARC and beyond, this lower is built for long-term reliability and multi-caliber versatility. Get this and more for sale from Wild Zebra, the best gun store!

FEATURES

Mil-Spec Construction Ensures reliable compatibility with any mil-spec AR-15 upper.

7075-T6 Aluminum Receiver Provides strength, rigidity, and long-term durability.

M4 6-Position Stock Adjustable length of pull for improved shooter fit and control.

A2 Grip Classic ergonomic profile trusted for stability and comfort.

Complete Lower Assembly Eliminates the need for individual component sourcing and installation.

Black Protective Finish Offers corrosion resistance and a clean, professional appearance.

SPECIFICATIONS 

Manufacturer: One Horse 

Model: OH-15 Complete Lower 

Caliber: Multi Capacity: Not specified

Barrel Length: Not specified 

Thread Pattern: Not specified 

Grip: A2 

Stock: One Horse M4 6-Position 

Trigger: Not specified 

Sights: N/A

Finish: Black 

Magazine Included: No

WILD ZEBRA NOTES

Mil-spec dimensions ensure broad compatibility with any mil-spec AR-15 upper.

Adjustable M4 stock provides flexible length of pull for multiple shooters.

A2 grip offers classic ergonomics and reliable control.

Ideal foundation for multi-caliber builds from 5.56 to 6mm ARC.

Complete lower format saves time and eliminates assembly complexity.