I have an old Ruger Mk I that I inherited from my father myself. The gun started out with a bit of a dark history, but has since come to be one of my most treasured family heirlooms. When I was a kid my father would come home from work alot of times and he and I would just sit on the front porch for awhile plinkin' with it. Lots of lazy afternoons spent plinkin' an' talkin' that way. It's of course killed more than it's fair share of critters also, including one deer that had been struck by a car and was bookin' it through a Kudzu patch. In a pinch even a .22 LR can do fine with a whitetail when ya' tuck one behind its ear.
I still have a grand old time with it, and take it out shooting a couple times a month. My buddies all have Sig Trailsides, Browning Buckmarks, Walthers...lots of other .22 pistols which are actually much nicer than my old keepsake, but...somehow me an' my widdle wuger still manage to outshoot them every time.
It's one of the few guns I've rarely ever taken apart and messed with though. It's stainless steel with fixed sights, so all I've ever done with it is spray it down with some brake cleaner, wipe it down, and run a patch through it, and it still purrs right along without a glitch, hitch, or a bobble. It still has the original magazines with it, but I don't see the need to replace them. the springs are still strong as hell and bodies are in fine shape. (and it used to be kept loaded for several years when it rode in my fathers truck!) So I figure, why fix it if it aint broke?
If you need new mags, as I recall this place:
http://www.rimfiresports.com carries 'em. What specific questions ya' got in mind?
Hope you enjoy yours as much as I do mine!