I own and carry a full size 1991A1. I bought it new and have owned it for a number of years. It has the "plastic" trigger shoe and mainspring housing. It has the huge "billboard" rolling markings and the matte blue (black) finish. It's butt ugly, and I love it. No issues with trigger, mainspring housing or MIM extractor.
It has had quite a few rounds put through it, including factory loads and my hand loads. It has fed anything I've put through it, including some of the old "flying ash trays" and, as an experiment, any empty case or two. It sends bullets where I want them to go.
I had a gunsmith work on the action to get the trigger to 4 - 4.5 pounds, and I added some Kings combat sights.
My ugly old 1991A1 is reliable, and I'm quite satisfied with it.