Are there any Leupold QR 2 piece bases that I can get for a CZ452 silhouette that I can just have the receiver drilled and tapped to fit the bases? I would guess that would be flat bottomed, but not sure what rifle they make these bases for that has a flat top receiver. I see that the custom base one is flat, but I see that also needs holes drilled and more machining. I have a silhouette scope on a high power rifle using these QR rings and bases and I would like to use the same scope on this gun. Thoughts? Thanks.