I've been looking for a couple of somewhat specific models of .22WMR for a few years, but have not been finding exactly what I want for the money I had at the time. So it's probably time to cast a wider net...

Here's what I'm looking for and will not sway on these features at the moment:
1. .22WMR
2. Bolt Action
3. Detachable box magazine
4. 7+ round capacity
5. OPEN SIGHTS
6. Dependable and rugged method to mount a good scope
7. Budget: at or under $500
8. New or used is fine.
9. Extra magazines must be available as I will purchase extras.

What would you recommend to fill all these features?

Thanks!