I just got a Savage 17 from Cabela's and put Cabela's rimfire 3x9x40 on it. Comes with an extra turret once you get it dialed in at 50 or 100 then install the extra turret, pretty simple. You have to specify if it's for a 22 or 17 I believe. Spose you could get cheaper ones at WalMarche' or try Natchez Shooter Supply.