I hope I can get a bit of help here. I got a great deal on a stainless Ruger GP100 that was a sheriff dept. gun. My problem is she is DAO with a bobbed hammer. I cant find a holster with a thumb break for some retention that will work properly. I do have an open top Yaqui Slide style holster for it but for open carry I like a thumb break. The only holsters I have seen are LEO 2.25 inch duty belt ones. Oh almost forgot 4 in. barrell and a shooter.