The Comp-Tac Shirt Tucker TCH I carry my Kahr P40 in is so thin I can't really tell much difference between it and "Mexican" carry, except that the gun doesn't keep sliding down my pantsleg in the Comp-Tac.
Guys...I checked the Comp-Tac site and they don't list holsters for the MK series, only the K series. Might want to check though, their site could be out of date.
Not 100% positive, but I SEEM to remember during my very pleasant e-mail conversations with Gregg at Comp-Tac that he mentioned the MK9 as an available option.
I really like my SafarilandModel 0701 that I have for my Glock 27. Unfortunatly, they do not make one for the MK9. I e-mailed them and got a response that indicated the writer either didn't care too much for Kahr or could care less about customer input. I would be inclined to avoid Safariland completely after their pissy attitude if it wasn't for their SSIII duty holsters...