Safariland IWB Mag Pouch
is a flexible pouch which accepts any magazine (single or double stack) and can be worn on the belt or IWB (depending on what attachment system you have on it). I ran it IWB for a GreenOps pistol class I took and it worked well. I am going to be doing some work with this and other IWB mag pouches to see which one is most practical, comfortable and concealable. I will report back with my experiences.