One Horse OH-15 Complete Lower Features The One Horse OH-15 Complete Lower is machined from aluminum to mil-spec dimensions ensuring precise and reliable fit with any mil-spec AR-15 upper receiver across a wide range of compatible calibers without the need for fitting or modification. A mil-spec buffer tube provides a reliable and dimensionally accurate foundation for the included One Horse M4 6-position adjustable stock delivering a customizable length of pull that accommodates a wide range of shooters and shooting positions. The complete lower format delivers a ready-to-pair assembly that eliminates the need to source and install individual lower components separately. The OH-15 Complete Lower features a One Horse M4 6-position adjustable stock in black polymer providing a durable and weather-resistant platform with the adjustability needed to dial in a consistent and comfortable fit for any shooter. A black A2 grip delivers a comfortable and familiar ergonomic hand position that AR-15 platform shooters have relied on for decades across a wide range of shooting applications. The multi-caliber compatibility makes the OH-15 Complete Lower a versatile foundation for a wide range of upper receiver pairings from 5.56 NATO and .300 Blackout to 6mm ARC and beyond. Designed for AR-15 builders who want a well-configured and mil-spec complete lower assembly without the complexity of individual component sourcing the One Horse OH-15 Complete Lower delivers the quality compatibility and ergonomic configuration that serious builders demand from every component in their build. The combination of mil-spec buffer tube adjustable stock and A2 grip reflects One Horse s commitment to delivering a fully functional and competition-ready lower assembly at an accessible price point. For builders looking to pair a quality complete lower with any mil-spec upper the OH-15 Complete Lower is the definitive choice. One Horse OH-15 Complete Lower Specifications Manufacturer: One Horse Model: OH-15 Complete Lower Caliber Compatibility: Multi Material: Aluminum Finish: Black Buffer Tube: Mil-Spec Stock: One Horse M4 6-Position Grip: A2