The Forward Sling Mount is a sling attachment point that clamps onto the barrel and extended magazine tube. It can be configured for use with either Push-Button QD Sling Swivels or one point clip-in style attachments such as the MS3 Paraclip, the HK Hook, ITW MASH Hook, and others. Made from precision cast steel that is Melonite treated for wear and corrosion resistance. Mfg: Magpul