Here are some pictures from Paul Liebenberg of Pistol Dynamics in Palm Bay Florida.
He showed me the originals of the .356TSW Limited with a 6" barrel with the real high capacity mags also with the "Std." 5" upper.
Also the original S&W FBI 1076 Test and Evaluation gun that was always referred to when a 1076 was in question for any reason.
It was the one that all the other 1076's were compared to, with the "PROTOTYPE" - 9, 11 and 15 round magazines
that are truly one of a kind.
I was asked to not post any S/N's.
Regards,
Bad_Man_One