The reason people tell you the M1 carbine wasn't made with a bayonet lug until after the was is because it's true. The weapon was overhauled post war for the Korean War and almost all were retrofitted with new spec parts, including the bayonet lug, different type rear sights and a flick switch safety instead of the flawed push button one. The most obvious is that there was never a carbine bayonet made before 1945 and given the 90 from manufacture to ETO rule enters the earliest one could arrive is the first week of march 1945. Worth noting that the Carbine was a 1911/1917 replacement so wouldn't be issued to the same individual. Love the vehicles, I'm a bit obsessed with WC's, they're a seriously under regarded vehicle.
I'll be honest, I've been keen to avoid reproductions since they seldom look right and are easily told to the point I can pick out individual manufacturers reproductions and always give the totally wrong impression to what colour they are supposed to be.

