Ballistic Advantage BA10, Stripped Lower Receiver, 308 Winchester/762NATO, Anodized Finish, Black BAPA100090 High quality components and precise manufacturing make Ballistic Advantage firearms ideal for both new shooters and experienced gun owners. The durability, reliability and excellent build quality will ensure years of service you can count on. The Ballistic Advantage BA10 Lower Receiver helps you build a big-bore AR from the ground up. Mil-spec dimensions and coating ensure the highest quality and correct component interface.