I originally posted this in another thread regarding problems with the BG 380s, but I found this old thread afterward and it seems like this would be the right place to ask the same questions. See below

Does anybody know roughly what the newest SN's are that have been produced for this gun to date? Obviously there have been a lot of problems with this gun, most of them resolved fairly early on except obviously for the firing pin related issue which I believe remains unresolved, and I really want to make sure that I buy one of the newest possible SN's if I buy one.

From what I understand and have read, the SNs started with EAAxxxx, and proceeded to EABxxxx, EACxxxx, and so on. This makes sense, but I've seen EAXxxxx SNs posted, and if each letter represents 9,999 produced, that's almost 250,000 manufactured in the last couple years. That seems ridiculously high to me for this model and over that period of time, so I presume this logic isn't entirely correct. Does the 3rd letter change every time there's a revision or something? If that were the case it would mean there have been almost 25 revisions since productions started, which also sounds high. If someone could clarify, and perhaps clue me in on the highest known SNs produced that would be great. I've tried to find this information elsewhere including on S&W's site to no avail as of yet.

TIA!