The White Label Armory AR15 Lower Parts Kit with phosphate finish includes all the Mil-Spec components needed to complete your AR15 lower receiver build. This Stage 5 kit features high-quality, 100 percent American-made parts with no foreign, polymer, or MIM components. Each part, including the trigger assembly, springs, detents, pins, selector, bolt catch, magazine catch, and A2 grip, is built to precise specifications for consistent performance and durability. The phosphate coating enhances corrosion resistance and ensures long-term reliability in any environment.