my Dad passed his Ruger P90 45 ACP down to me and I love it for that reason, my question would be, how can I make the trigger/re-set a little more user freindly??
Wolf makes a spring kit for the p series rugers I put one on my p85 it was a definite improvement over stock, but just remember, if you spend a lot of money polishing a turd, in the end all you’ve got...is a turd!
you'll never turn it into a 1911 or even a glock! But what you will have a work horse that won’t win a beauty contest but will shoot all day long! (Oh if I can put the wolf kit on, anybody can do it!)
The P90 is a tank of a gun, it will last forever. I bought one (P90SS) to take on BYOG anti-drug deployments and it's still in almost mint condition. I rarely carry it anymore but when I do I'm reminded of how light it is for the size and it was originally designed to take the 10MM magnum (which never became a thing) so +P .45 is not an issue. I never found the trigger annoying enough to do anything with it...but I was raised on Army guns so YMMV.