Got to check out my MP40 before it started it's jail time. It is a Charles Erb gun and seems nice to me (limited experience with MGs). My father and I both compared it to my Thompson, that is also in jail, and both agreed we liked the initial feel of the MP40 better. Is the 207 that is marked on most of the parts something Erb put on the gun, or are those original serial numbers? Any other thoughts/observations would be appreciated.