The OPSM One Sling Swivel Mount is a steel cut in sling mount for perfect M16 rifles. It provides a comfortable ambidextrous balance to carry your weapon and is developed from top durable aluminum with a solid steel ring. The One Sling Swivel Mount it fits a wide range of clips. - Compatible with M16 rifles and foreams - No additional tube assembly required - remove buttstock slide over properly - Available for single point carabiner slings or sling webbings up to 1.25 - CNC machined from aluminum with a matte black finish - Made with extreme resistance to wear and corrosion