Olentangy Liberty Group is a company that specializes in producing high-quality HAVOC GEN 2 Launcher Stand alone stock adaptor full kit is pre-assembled with highest quality components. Designed for maximum strength and functionality this compact, lightweight launcher has been engineered with safety in mind.For more information visit their website. https://olentangylibertygroup.com/product/gen-2-havoc-12-inch-37mm-launcher-stand-alone-stock-adaptor-full-kit/