OP, so the gun is new and as-is shipped from SIG? Jon, doesn't it seem odd to you that 3 different people had the same issue, and they bothered to take note of their grips, and whether or not they were hitting the mag release? I have the 938, and it does some funky mag things, so this wouldn't surprise me at all.
I don't see what the problem is. Everybody is being nice, and getting along, and I, for one, am learning stuff. So, if you don't like the discussion, don't look at the thread. Or, simply cut to the chase, and close it.
Is there an age limit for a thread, after which we kill it?