The MEGA GTR-3H Ambidextrous Billet Receiver Set was designed to complement the enhanced features of the MEGA rifle product line while retaining compatibility with most mil-spec accessories to give you the most options for completing your build. All receivers are precision-machined from solid billet aluminum and are held to extremely tight tolerances and high quality standards to ensure consistent fit and function. With its ambidextrous features, light weight, and superior finish, the MEGA Billet Receiver Set is the perfect foundation for any rifle build.