okorpheus

I'm trying to decide between a full size or compact M&P 9. I want to use the weapon both for concealed carry and for IDPA / USPSA, so I know there will be a compromise one way or the other. The specs don't make it seem like there's really that much difference in size - particularly if using the mag with a place to rest the pinky on the compact. How much harder is it to conceal the full size as opposed to the compact? I'm a bit on the heavy side if that matters, and can be flexible with dress - I work in a school so any time I have to be in professional attire I couldn't carry anyway. How much of a disadvantage is using the compact in competition.

I've seen grip extensions that wrap around the bottom of a standard M&P magazine, essentially making the grip continuous on a M&P compact. Are these legal in SSP? Same question about the magazine extensions that add a place to rest the pinky finger on a 9c. Not really related to the rules, but how much of a disadvantage is there in using a compact vs. full size? Looking for a gun I can use for carry and IDPA, but I'm not sure which compromise to make - using FS and being a bit harder to conceal (how much harder is it anyway) or using a compact and being at a disadvantage in IDPA.