One other thing. Because it's a Colt frame, Turnbull restoration manufactures Colt-looking slides that are heat treated and look period correct. The markings are all period correct too. If you wanted a 100% Colt-looking arsenal rebuild that was fully restored and essentially a new gun, you could send it to Turnbull, sell the Remington Rand slide to them to defer some of the restoration cost, and have them put a new Colt-looking slide on it.
Then you'd have a 1943 serial numbered gun, that was basically brand new, and thus you could shoot the crap out of it with no worries. The WW2 slides were heat treated on the ends, but not in the middle. I don't know if that makes any measurable difference in the strength of the slide or not. I'm not anything close to an expert. They'll chime in soon enough.