I got my 96G conversion kit today.. cleaned it up and put 'er on the frame.
pretty nice! finish was vg to excellent.
Night sights too!
the lips on the .40 mag tapered from 0.345" to 0.418"
on the 9mm mag, they tapered from 0.354" to 0.380"
.40 mags are a bit longer, however they do have a thicker base plate on them.
mag thickness between the two were about the same (w/in 0.003") they both dropped free and locked the slide back regardless of which slide was installed.
I would think that using the 9mm mags with .40 would work better than the 9mm in the .40 mags. The 9's looked and felt too 'sloppy' and would probably have multiple feeds.
My first experince with .40.. Out of curiosity, I put a 9 in the pipe (bbl removed from slide!!!!) and the whole thing slid right down the bbl! lol
here's the pics: (.40 on the Left or Top!)