No secret, I think these guys have the best for the money, 1911's out there right now. Many, many hundreds of rounds thru my Sting Ray, and great, so far. Took delivery of another yesterday, a full size;
The Tisas 1911 A1 US Army is as close to the WWII sidearm you will find.
tisasusa.com
tore that thing down, and inspected by gunsmith, NO mim parts, very good fit and finish, no slop of any kind. It was raining, so didn't shoot it, yet.
Compared it side by side with a 1943 Remington Rand, it's a match, with a few improvements.
Looking at the latest prices for the new Springers from SHOT, all just South of $2,000, all I can say is they won't be seeing any more of my money. I'm a convert. Wilson, Colt, Remington, Ruger, Kimbers, all back in the safe, where they're sure to feel neglected.