Good luck with that. The 552 pictured has a one-piece scope/base on it, and the tip-off mount is all the way forward on the tip-off rail on the receiver. You will want to replace that scope anyway, it looks like a 3/4" Bushnell .22 scope, one of the cheap scopes sold specifically for 22s back in the day. You can pick up a 1" .22 scope with rings for $50 or so.I'll have to move that scope forward