Quote Originally Posted by philb View Post
the numbers don't match
That's not so unusual for specially M1icon or M1 A1 Thompsons. They would reuse uppers or lowers as required and they would just use as was without restriking numbers. Their spares were a vouple lowers in the tool box.

Also after the war, the groups that received these to surplus didn't care about matching anything. I've seen an MG34 that had different numbers front and back in my city while the "Matching" gun was sent across the country. These mismatches didn't matter to surplus dealers. Just a complete parts list to sell.