I think they are. I've never had a problem with my sepra. Even when I used to have a beretta 92fs I could run in dead sprint with no problem (and thing is heavy and bulky compared to my 17). It's a great all around holster in my opinion and very comfortable to wear all day to boot. I prefer the carbon fiber models. You'll never have to worry about your weapon leaving your side unless you push the button. Great holsters. Hope this helps.