I'd save up if you can & buy a hand-fit 1911a1 .45acp like a Wilson Combat, Les Baer, DL Sports(Dave Lauck), Cabot, etc.
Some say to avoid the MIM parts too. I'm not a gunsmith or engineer but I can see the valid points.
Years ago Wilson used several MIM parts in their lower end 1911s including the hammer and sear. Too many people called up bitching that their $1800 1911 had MIM parts in it because they were experts due to the errornet. Wilson came to the conculsion that even know that weren't seeing many failures they would switch to tool steel parts, they promptly raised the price $300.