I’m currently using and am very much satisfied with the 3x9x40 rimfire scope made for Tract optics. The glass is excellent, adjustments are crisp and accurate, and this model is parallax free @50Yds. Eye relief is very generous, an easy scope to get behind. Assembled in the Philippines with Japanese glass I think. They also offer a 4x12 rimfire scope. My previous rimfire scopes I’ve used are the Leupold 3x9x33EFR, and the Leupold vx 2 4x12 AO, ....nice scopes but I like the Tract much better for hunting squirrels and such. I have it mounted on a TC 22 classic with a 1pc Leupold base and low rings and there is 1/8” clearance at the objective. I have the bdc reticle and it’s very nice and clean, with a finer crosshair and grad marks than depicted on the website info page. It cost 174$ shipped. This is a lot of scope for the $$. Any questions give Jon a call @Tract, a great guy to deal with.