My old man has a colt 1911 in 45acp. It's probably the most accurate old time 45 I've ever used. Never mentioned it before on any forum. Supposedly has a bit of history to it. I may check it out someday. It's chrome plated and has triple crowns across the ejection port. He worked auto body/auto mechanics years ago. Anyway, he worked on a car but the guy was a bit tapped cash wise, this was in the 50's. He offered my pops this 45 in lieu of cash. Here's the thick part. He told him it came off the British pistol team and that the parts came off the assembly line sequentially, meaning barrel 100 is mated to lower 100 and so on. Don't know if it's a crap story or not as I'm pretty sure it may have been a lend lease model and the parts came out of a basket. Not sure but I was issued 45's and the things were rattle traps. This one doesn't make a sound when you shake it, everything is so tight as if it were a custom job. Again, I have no idea. Someday I'll check it out starting with Colt.
As a side story relating with issued ones. One year during qualification, yes, we did qualify with 45's back in the day not just 16's or your primaries (mine was a 106, I'll post a swiped image later down for the iggies), the LT., who I suspected didn't really care for me I think, gave me this rusted out POS to go to town with. First shot the rear sight fell off. I'm like, "Yo LT., bit of an issue here." He told me tough shit, you started with it, you need to finish with it. I'm like great, like it's a golf ball. "Really, will I get a mulligan or something". Prick. Still got another expert bar with it in the end. just used the back hump and front sight. He was at a bit of a loss. Prick.
I had to do a search for a 106 so it's a snatched image. Things were a blast. Could be configured a few different was to fire. This ones a jeep mount, my fav.