Have a friend whom had a totally butchered G41(M). It had both a laminated stock and sheet-metal trigger guard. I got my first 'M back in the 1980s. It was pretty decent by today's standards, but had a few MM parts and stock was lightly cleaned. In any event, as a collector/shooter, I just had to try it out. So, took it to the local, open range and was going to run 10 rounds thru it. Unfortunately, on the 6th round the rifle failed to eject, and bolt had jammed. What happened was one of the cam lobes on the bolt body had broken off (piece about the size of one's fingernail). To say I was unhappy would be an understatement. Since then, I have always wondered if this defect was perhaps one of the reasons the rifle was a failure (other than the most over-engineered shoulder-arm the Germans issued in WW2).
So, in talking later to the fellow collector whom had the butchered 'M, he was more than happy to give me what I had in my rifle. Since the bolt assembly was MM in that rifle, he just swapped out the matching bolt from his wreck, and sold it with the broken bolt from my rifle, to another, well known arms collector. However, in doing so, the latter asked that if, should he find another complete bolt in commensurate condition, would he swap out the bolts (since the one he kept matched the "wreck" 'M)? My friend said he would. Several years went by and the WKAC turned up at the Great Western show with a replacement bolt which met the requirements. However, my friend, whom never cared much for the guy, decided not to follow thru despite agreeing to do so. The WKGC asked if I could intervene, but even my efforts were of no avail, and that is where it ended.
In any event, I recently visited another friend. Since he no longer has any interest in restoring C & R arms (not that he ever did much other than gather up spares for potential future use), I came away with all his German long arm components to "redistribute" in his behalf. Surprisingly I found a G41(M) rear sight housing, leaf, and base. In a pan of unknown parts, sitting for two weeks, was a unknown trigger assembly. Only today did I notice the three digits stamped on it matched the rear sight assembly! Unfortunately I have been unable to find a complete parts breakdown on the 'M, so I hope no additional components get overlooked because I have no reference to go by...