As an aside to this , I know of a county where a Mini-14 was available in the trunk of a squad car. By whatever means , it became so rusted as to be unusable. The solution--replace it with a stainless steel model!
Stainless steel is good, but they still need to maintain it Oil does wonders. The great thing about the Mini 14 is that they would only need to wipe it down every once in a while