This Vltor SASE-2 Enhanced AR-15 Receiver End Plate Sling Mount is a Drop-In, Ambidextrous rifle upgrade that simply replaces the standard factory component. This Enhanced version of Vltor's original Single Attachment Sling Endplate (SASE) features a Larger HK-Style Loop for compatibility with a greater range of modern tactical slings that utilize larger than standard size HK-style Hooks to attach to the firearm. Includes an indexing washer and screw that interfaces with the rear of the receiver to ensure the end plate is level.