Aero's AR15 Gen 2 Stripped Lower Receiver is the perfect base for your custom AR15 build. Machined to mil-spec dimensions, lowers work with standard AR15 components and ensure the highest quality with a correct component interface. It features an increased magwell flare which allows for easier insertion of magazines and provides a sleeker look. Included is a nylon tipped tensioning set screw. NOTE: Requires a lower parts kit, buffer & stock of your choosing to complete.