Leupold’s discontinued 6X AO compact is my absolute favorite squirrel rifle scope. There are many others that work great too - the rimfire series from Leupold, the EFR 3-9X compact, weaver’s rimfire series, the Nikon EFR, the Kahles rimfire scope (rarer than hens teeth) and many others mentioned here all work well.
PennDog
That 6X Compact AO was a sweet scope. I had one on my Clackamas Kimber 82 Custom Classic. Pains me to think about how many nice rifles have passed through my hands.
