When you say mint, do you mean you bought it new and not many rounds have been fired or do you mean you bought it used and it looks new?
If you bought it used you may have just relieved somebody else of their problem.
If you bought it new, it may just need some breaking in.
I just did a quick search. It looks like you may need to take some special care with this gun, most of this don’t have a firing pin lock which means it can fire if you drop it.
Good luck.