Depends how much magnification you want. For my CZ455 Supermatch I have an older Bushnell Legend 5-15x40 scope that I picked up on EE for a little under $200. The parallax adjusts down to 10 yards so it's perfect for rimfire, if a little big. I put it on medium Sportsmatch rings an did not have to remove the iron sights (the rear ones clear by a mm or two). The only downside of this setup for me is that the cheek weld is more of a chin weld due to the curved stock, but I can live with it.