excluding the barrel, friction pieces and stock? I have a parts set that I believe to be from a 3" gun and recently fell into a 2.75" stripped receiver. It appears all the parts will fit up, but wanted to confirm my suspicion that the receiver parts for both guns are the same? Thanks in advance.
Very doubtful if any would work. You could always go to Midwest gun works and look at part numbers to verify. It will be more trouble then it’s worth. Just keep the parts for the 12 mag and find the parts for the 12 elsewhere in my honest opinion.