Great holster. It fits all my pistols which are kinda big (Ariakon Overlord, Armotech G2, Warsensor G1). The holes are great for 10 round tubes, co2 cartridges and even barrels (G2). The back side, which I couldn't get a picture of (was quite concerned about it) Has three buttoned straps with velcro around them. Two are higher up and one is lower down, so if you have a slimmer belt, it should still work fine.
My one complaint about this holster (besides only being in woodland digi as opposed to Valken's color variety) is that it's sewn in on the bottom. I would've preferred a hole there like another holster I have, since larger guns tend to have some space at the top and that hole would really make the fit of the pistols more snug. Also, if you use and extended barrel you can't fit it through.
Overall, great holster, get it if it suits your needs!