The MSA (MOE Sling Attachment) is designed for use with legacy MOE Hand Guards and Forends. It provides a forward sling attachment point for the Magpul MS3 Sling and other clip-in sling systems, and is constructed of steel with a Melonite finish for wear and corrosion resistance. Made in the USA. Color Black Melonite Cap Size Black Material Case Hardened Steel Stock Material Steel