Ready to run the moment it hits your bench, the One Horse AR15 Complete Lower Receiver comes fully assembled and function-tested. Built on a forged 7075-T6 hardcoat anodized receiver, this lower features a Mil-Spec buffer tube setup and a standard M4 adjustable stock. It includes a crisp single-stage trigger, A2 grip, and all small parts installed. Simply drop it onto any Mil-Spec upper, and you're ready to roll.Key FeaturesCaliber: Multi caliber configuration for versatile use.Buffer Tube: Equipped with a Mil-Spec buffer tube for compatibility with standard stocks.Grip: Comes with an A2 grip for comfortable handling.Stock: Features a One Horse M4 6-position adjustable stock for customizable length of pull.