What you are looking for is a called a "paddle holster". Here is a link to one that fits your gun:
I think Fobus paddle holsters are great. They are light, inexpensive, well-made, thin, compact, comfortable, durable, fast to draw, provide good retention, waterproof, easy and quick to put on and take off, and simple. The gun snaps securely into place in the holster.
What more can you ask for? I love leather, but I think these Fobus holsters beat them in every way.