I've been using this successfully for inside-pocket concealed-carry of an extra mag, not only for my SIG P239 but also for my Kahr P9 Covert and even the smaller Kahr P380 mags.
This is a Size #2 Uncle Mike's Inside-Pocket Holster; I believe it's made for small 380 handguns. But I've found it fits really well inside my left front jeans pocket, and with its slightly padded construction, it is really comfortable AND it doesn't print at all. For less than $10.00, it works really well for me.
But the only problem with buying it was the Orlando FL airport "security" made me check the carry-on bag this was packed in -- brand new, unopened in the package -- because it was "gun" related. (Surprised it even showed up on the bag scan... And yes, I'd much rather be safe while flying, but come on... Their attitudes around the word "gun" that day were horrible...) Anyway...
Tight groups.
Old No7

