Back when all high powered air guns had a heavy internal spring...all sorts of scopes and mounts failed...yup from an airgun. Any way, better scopes and mounts were designed using...a lug. Usually just a large 6MM pin built into the underside of the rail, that fit into a hole on the receiver top. I have twice as many rails as guns to put them on and have ordered more...keeps me out of the bars...I guess. It would take very little to add a lug to the standard rails. Even a half disk of JB after the rail is fitted and fastened could not hurt anything.
