Thanks for the responses, Folks, but I'm still unclear as to how S&W assigns serial numbers to the various types of M&P's - probably because I didn't phrase the question clearly.
I am familiar with the stickey's - I have posted my two there and that's what got me to wondering how the numbers correspond to the various models of M&P's.
As an example, let's say S&W manufactures 500 9mm full sized pistols in a run - I assume these are assigned sequential serial numbers such as MPN1000 to say MPN1499, (just picking numbers).
They then manufacture 500 of the 9c's. Are the serial numbers simply continued - MPN1500 to MPN1999 ???
Or, on the other hand, if the next batch made after the first 500 9mm full sized happens to be .40c's would they get the numbers MPN1500 to MPN1999 and there be a gap in the sequence of S/N's for 9 full sized, until the next batch of 9 full sized are manufactured
I first thought that there is some method of assigning sequential or blocks of S/N's to certain caliber and size of pistol, but I can't really see a pattern from looking at the stickey posts.
Or am I incorrectly assuming that S&W makes various models in a production "run" or "batch"?