Thanks for the comments regarding these carbines.
Not being a carbine "nut" I certainly owe a debt of thanks to Jim Mock for his help on the Bavarian stuff.....he is a hugely dedicated researcher by instinct and he has done a hell of a job on his Bavarian carbine web site.
Also great thanks to Bruce Canfield , Jim Mock and Ted Tsyme a fellow Canadian, who were great guides while I was debating whether I would purchase the 1942 dated M1A1
carbine that is the subject of an earlier thread on this forum.
David