Mount is new and has 28MOA built into the base for long rage shooting, this is designed to clamp onto any mil-spec weaver type base with a recoil lug, this will handle the recoil of a .50 cal no problem, it will take any 34mm scope tube, 80.00 shipped, postal MO only, no paypal, PLEASE e-mail me at DLE55@att.net, thanks