I was about to order yet another holster, this time to fit my new M&P Compact 9. Just for the heck of it, I tried the M&P in my Crossbreed QwikClip IWB designed for a Sig P239 .40 and it it fits fine. Even has the audible "snap" to it when the gun is inserted. 'Not saying it will work in every P239 Kydex holster but this time I lucked out. Looks like I'll be canceling that BladeTech order.