6", 7", or other, hunting, competition, or something else. Most single-stack holsters work just fine for double-stacks, but the longslide presents the same problem I run into with a comp. Instead of getting something that encloses the whole pistol, a belt-slide may work better. They're a lot easier to find. My comp brings the length of a 5" barrel to nearly 6.5" so even a 6" longslide holster doesn't work for me and I haven't seen any 7" longslide holsters I could afford. I'm on an "Uncle Mike's" budget.