Trinity Force MNTLU04B AR Receiver Extension Kit Mil-Spec Black Hardcoat Anodized Steel/Aluminum 11" L

Trinity Force's AR Receiver Extension Kit includes a standard buffer spring, 3oz carbine buffer, castle nut and lower receiver end plate. It is parts are constructed from aircraft grade aluminum and a high strength steel with a black hard coat anodize finish. The 11" buffer tube also features rolled threading. This assembly kit fits on all Mil-Spec AR 15 lower receivers.