The most accurate .45 auto I ever owned was an Argentine Systema Colt. It was not particularly well finished but it’s accuracy was almost off the charts.
To make it even more odd, it had a heavy trigger. With a trigger job, it probably would have been a one hole shooter. I needed money and sold it to a dealer who believed me and paid a good price for it.
I later met him at another gun show and he too was amazed at how accurate it was.
I have a Systema 1927, and I believe it has as much quality as a Colt-made pre-WW2 commercial colt, which is saying something. Even in it’s refinished condition, it is a slick shooter.