Phew, I lost track of this thread
Thanks, Gents!
I never took the Sub2K plunge, moving into 3rd Gen
S&Ws instead.
After mucking about with Beretta 92 mags in the S&W
6906 (and Kel-Tec P-11), I'm reasonably certain the
SD mags would work in the Beretta 92 version, with
addition of an appropriately located, mag catch slot.
The SD (and Beretta) mags might not work in the
Glock version, if there's a lot of wiggle in the mag
chute.