After I educated myself on 1911’s I was ready to do a refurbish on one. I wanted to see how accurate I could make it using bargain basement parts.
A $59 USGI military surplus barrel. A $15 nm barrel bushing, A $9 full length guide rod kit w/18# recoil spring. A $12 adjustable trigger. I did all the fitting. I did a disconnector ramp and polished the feed ramp. I fitted the nm barrel bushing for 100% lock up with no barrel spring in either direction. I lapped the barrel to the bushing.

Test fire,,

At 25 yds, using Russian wolf 45 acp Ball ammo she shoots cloverleafs and clusters no problem.

I left the frame rail to slide fit alone. It’s a tad loose in the front in full battery. But it’s possibly slide spread. The frame rails mic even front to rear. I have the tools to work on the 1911 from brownells.