Ruger AR-15 250th Anniversary Stripped Lower Receiver Black The Ruger AR-15 250th Anniversary Stripped Lower Receiver in black offers a limited-edition foundation for custom builds, available now at Battlehawk Armory. SKU 28502 features a special "Made in the 250th Year of American Liberty" engraving on the left side of the receiver to commemorate America's 250th Anniversary. Machined from 7075-T6 forged aluminum with a hardcoat anodized finish, this multi-caliber lower is built to mil-spec dimensions for seamless compatibility with standard AR-15 uppers and components. Designed for builders seeking both performance and historical significance, the receiver includes a broached magwell, full-cut fire control pocket, and an adjustable tension screw to minimize or eliminate play between upper and lower receivers. The forged construction delivers the strength and durability expected from Ruger, while the commemorative marking makes each lower a unique piece for collectors and enthusiasts alike. Start your next multi-caliber AR-15 project with a high-quality, limited-edition component that combines proven engineering with a lasting tribute to American liberty. Add the Ruger AR-15 250th Anniversary Stripped Lower Receiver in Black to your collection at Battlehawk Armory today. Specifications Manufacturer: Ruger Model: AR-15 Stripped Lower Receiver - 250th Anniversary SKU: 28502 Caliber: Multi-Cal Receiver Material: 7075-T6 Forged Aluminum Finish: Hardcoat Anodized (Black) Configuration: Stripped Engraving: "Made in the 250th Year of American Liberty" Features: Broached Magwell, Full-Cut Fire Control Pocket, Adjustable Tension Screw Compatibility: Standard Mil-Spec AR-15 Upper Receivers and Components