A year ago I would not have considered appendix carry seriously. But now I find myself using appendix carry of a Kahr MK9 in a Comp-Tac 2 o'clock holster about 1/3 of the time.
I began to consider appendix carry after buying this small 9mm steel gun and wondering how to carry it. The 25 ounce gun is small enough to pocket carry but rather heavy for this, so I was thinking about a belt holster. I read some Internet postings about appendix carry and saw the holster on the Comp-Tac website. I invested $50 or so in the holster and it has worked out quite well. Although it is a tuckable IWB holster, I do not use the tucking feature at present but simply wear it IWB with a cover garment like a sweater or sweatshirt.
My feeling is that appendix carry is best suited to a short barrel gun with a short "two finger" grip, such as the Kahr MK9, Walther PPK or PPS, snubby revolver with boot grip, Glock 26/27, etc. If the grip is too long, it will tend to print in the "slide vertical" position required in appendix carry. And a flat gun is better than a thick gun, of course. I think that appendix carry also works best if the carrier's stomach is relatively flat, for obvious reasons. And the holster belt loop(s) should be offset from the gun's slide to keep the package as thin as possible. If the loop is substantial and the gun small, you can get by with one loop instead of two.
