Almost ruined mine
Mini's are NOT chrome lined. I nearly ruined mine, here;s how....
I did some casual shooting one morning, rocks, cow pies, just out for a stroll on property and a ROW near my home.
Using import ammo, non corrosive, but........mixed in was a couple of rds of corrosive ammo that I was not aware of.
I came in, put the rifle in the safe, did not clean it.....went to work.
When I handled the rifle next, in a day or two, .............disaster, visible rust in the bore, and I could not get the action open, the op rod was rusted to the port/gas tube.
I hosed the whole works down w/ WD-40, and after a bit, w/ the action out of the stock, smacked the bolt handle w/ a soft mallet, which popped the action open. I then brushed, scrubbed and JB'd the bore and gas assembly like a madman. The rifle shoots as well as ever, and their are no visible pits (to the eye anyhow), but I nearly ruined one of my favorite guns.