I carry an XD SC .40 with the extension on it. Your hand can't be much bigger then mine. After installing the grips and the extension the gun fits great and is very accurate. 9mm ammo is easy to find and cheaper, .40 ammo is also easy to find and a little more expensive, .45 ammo....umm not sure never looked for it or priced it. Columbus PD is going to the SW MP .40 from what I have heard....well everyone but TAC they are staying with H&K, again from what I have heard. I have a SW MP 9mm compact and obviously my XD SC .40. If you are interested in the LCP .380 I know someone looking to sell one that's practically brand new. However I think it will be way too small for you., also unless .380 rounds have been replenished, they may be hard to find. I haven't looked for them in awhile. If you want to take a look at the M&P or the XD, let me know I don't live that far from you. (neither of them are for sale but you can get a feeling for a SC if you would like. had to put that in there before Todd came looking for my XD)