Sounds like a good recommendation above.
Any good quality rifle scope will work fine, but I'd avoid the cheap ones. I just picked up a 4X fixed power Alpen Optics scope and it seems to be OK, but sighting in was challenging. 10 clicks up might equal 10 clicks up, or it might translate to 4 clicks up + 6 clicks left. [:@]Once I got it sighted in it's staying put, but it isn't the best scope I ever owned. To be fair it was a cheaper model that manufacturer offers and I picked it up for just over $10. on eBay.