I have had mine since the mid 90's; I bought it used. It is so easy to clean except you have to clean the barrel from muzzle end. Or, you can insert rod without the brush and screw it on when it's fully inserted. Kind of a pain.
Factory mags are expensive but I have found 5 aftermarket that work flawlessly and were cheap back in the day. This Mini has been 100% reliable.
The other day I took the bolt completely apart, not too bad.
Let me know if you have any problems with yours, I might be able to help.
Here is mine. Soon to have AR company.