The Troy Industries OEM M4 end plate sling mount replaces a factory M4 carbine receiver end plate and provides two attachment points for quick detach swivels essentially make it ambidextrous. The M4 Receiver End Plate is constructed of hardened aircraft aluminum with either a matte black or flat dark earth finish. One quick detach swivel is included. Requires removal of buffer tube for installation.FeaturesHardened aircraft aluminum constructionStainless Steel push buttonAmbidextrous QD Swivel Mounts Includes one QD Swivel