sld, Hope you enjoy your mini as much as I have mine. Like others have said, stick with Ruger magazines and you wont have any problems. I think they are easier to break down and clean than an AR. The bottom one is a 1987 185 series GB model. The top one is a early 195 series that I'm guessing was made 1999-2000?
Ruger Mini-14 Serial Number History
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Very nice looking guns for a fellow Kansan!