Originally Posted by Hawkeye
I am jealous. Love the FiveSeven. About the XDs, I shoot and carry mine with the factory mags and no extension and it works fine for me. If anything I would get a Pierce extension and not a full one as it conceals better without a larger grip.
I like to have the larger mags if I want to go to the range and shoot quite a bit for pure target shooting, though that doesn't happen often. I was looking at the Pierce extensions, but really have no issues with the factory 5rd mags for carry or shooting but may pick one up just to try it out.