A few choice words, eh?
Glad the range wasn't too far away. What does fuel cost now in your part of the world?

As far as I know, the M10B1 was the 7.62 sporter model, the M10B2 the heavy barrel model, and the M10B3 had the ex mini-gun barrels.

As far as AIA still being in business, I don't know for sure. Their website seems to no longer exist.