Ruger 22s before Mark 1?

[klover]

I don't know what I bought, but had something like it as a teen.
Serial is 13-17xxx. No slide back on last round. Six inch barrel, black.
What magazines work? It came with only one mag.
Thanks.

 

[greyling22]

http://hunting.about.com/od/guns/l/aast50rugersa.htm

yes, the ruger pistol and the standard model. They use the same mags as the mk1, but different from the mk2 and3.

midway has mags for it. Part # 197678

 

[rule303]

That is a mid 70's production standard auto. It should have the later A-100 grip frame, which will use the same mags as the MKII.