Re: How common are "slamfires"?
One needs to inspect and clean his piece periodically.
There are reasons for that.
A friend asked me to go over a SKS he got at a garage sale.
It was like new, but the firing pin was so frozen on the commie POS, I worked and soaked it for a day and night before it unstuck.
It was protruding and he was lucky he never had loaded the thing.