AR-15 receiver end plate with two integrated eye-hook sling-clip points. It seats under the castle nut on a mil-spec carbine receiver extension and gives you two fixed attachment points for clip- or snap-hook style slings. Aluminum, anodized. Features: AR-15 receiver end plate (castle-nut backing plate) Two integrated eye-hook sling-clip attachment points For clip / snap-hook slings - not push-button QD Aluminum, anodized Installs under the castle nut on a standard mil-spec carbine buffer tube. If you want a plain end plate with no sling provision instead, see the ABTA01 2-pack.