This is the Uncle Mike's Sidekick Size-15
Said to fit 3-1/2--4-1/2 barrel large autos, open end.
I just needed a basic holster until I decide what I want to spend some real money on. The M9 fits well in this holster, initially very tight, but once it spent the night in it, it has loosened up to just a nice snug fit. It does ride rather high on the hip, and I suggest a wide belt be used.
You will notice in one of the pics, my successful yet un-graceful attempt to correct this holsters one deficency. I was unable to get a nice grip on the draw, so I broke out the needle and thread and pulled the lip back a bit to let my finger get up under the trigger guard on the draw. Worked out great, I will be pulling those stitches out and re-doing it with some stronger black thread.