Thanks for your input,
What's the slide version? I see that I can get different bodies if I want to use the MTAC with various guns:
Comp-Tac : Products
Edit:
OK, I figured out the slide version but it looks like I can only get that for one of my pistols (PM9). I wish they made one that worked with both a G20 and G29. I've got a G20 but may be picking up (or trading in the G20) for a G29 if the deal presents itself. Maybe the extra body idea is best for the Glocks.