BSA 2-7X32 with adjustable objective. They are a pretty decent rimfire scope. Or a bushnell banner dusk to dawn scope in 2-7 or 3-9.

Both are fairly cheap scopes though so don't expect the best glass or be shocked if they are not right out of the box. Cheap scopes are normally cheap for two reasons, cheap glass and poor quality control. I have owned plenty of cheap scopes though and they worked just fine as long as you didn't expect too much from them. They don't always track that accurately, but I have never had an issue with one losing zero once it was set. Just don't put one on a gun that you will be adjusting the scope for range or windage all the time.

And if you go too cheap some of them tend to fog up in nasty weather as well.

The two I mentioned are ones I have personally owned and was perfectly satisfied with the purchase.

A good rule of thumb is if it comes in a plastic see through bubble package at walmart or K-mart its probably a piece of crap.

Paul