I second what Sportdog7 and Galena have said about the Blackhawk Serpa made for the Beretta 92/96. I like that there's a little space between the muzzle and the end of the holster to better protect the weapon. The holster has solid, unmoving lockup. I removed the tensioning screw and parts altogether.
The Blackhawk is my open carry holster when I'm closer to civilization. When I'm further out in the sticks I use the Bianchi holster that I mentioned earlier on a GI pistol belt with Y harness and assorted ALICE gear.