Originally Posted by canebrake
Great choice. And don't worry about the slide fit. Close tolerances for the 1911 slide fit are over rated.
The Colt is built to specs.
This is from Mark Roberts several years ago, while he was in charge of Colt handgun manufacturing; "...if a gun [Colt] does not run, out of the box, it's broken - send it back". This was in response to a question of why Colt did not fit up their slides and frames ultra tight like Kimber, etc. He advised that there is a "correct" tolerance for an accurate, reliable 1911 - and that tighter is not better, and gives no worthwhile advantages.
He contended that the miniscule gains in accuracy vs. the headaches and unreliability of a tight 1911 made super tight a bad practice for all but target range only guns that are never used for defense. The pistols sold to the military were purposely built with certain clearances incorporated into the mechanism to ensure reliability under battlefield conditions. Reducing these clearances may make the pistol shoot more accurately, but it will also detract from its serviceability as a combat arm.
If it needs break in - it's fitted wrong by people who don't understand the design - or are chasing that last 1/4" on a 2" at 25 yd weapon - foolishly.
YMMV, and doesn't necessarily apply to the GC.