I have my father’s 99M1 that I learned to shoot with as a child. Several years ago he was riding with the gun on his 4 wheeler and broke the stock when he flipped the 4 wheeler. He took the gun apart to clean it and never put it back together. When he died a few years ago, I ended up with a box of gun parts and pieces. I know everything is not there but most of it is. I can find a stock but what I need is someone who is trustworthy that can put this gun back together. It probably means more to me than any other gun I own. Any help would be appreciated.
A copy of the old NRA gunsmithing manuals or JB Woods firearm assembly books might help and be as close as your local library. Rimfire Central site might also be a good online resource.
I have never taken one apart but being a medium priced gun it is probably a simple design.
Also look at the Marlin Model 90 take down/maintenance information. It is very similar to your Marlin and the Model 90 is still being made. Some parts might interchange.