How hard is it to try using a complete USGI Upper with a Non-USGI Frame like a Springfield U-S GI 45?
I'm hoping the Slide is just a little dinged, and not bent, twisted or cracked.
Assuming it's got it's full USGI dimensions, fits reasonably tight...what else do I need to worry about besides the disconnector alignment and frame to slide fit?
I may need to add a firing pin, firing-pin spring and fp stop. I assume current Colt replacements should work?