I have a Witness P-S 9mm bought in 2012, a SAR B6PC and a CZ75B Omega
Witness P-S will work with the factory 16rd CZ mags, the MecGar CZ75 17 and 19 round mags, the Elander 16rd mag
All of the above will work in the SAR, but stick out of course.
The Tanfoglio 16rd mags as well as the Elander 16rd mags work in the CZ75B Omega, they look and feel better too since they have the poly floor plate. (IMO)
This may be super obvious but i had to try: You can not use the MecGar plus two extension on any of the above mags except the 17rd MecGar. They fit fine on the Tanfo and Elander mags, as well as 16rd CZ/MecGar mags, but they won't lock in place after (on the witness or CZ, they may work in the SAR but I didn't try) You could probably modify them to work pretty easily.
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