Make sure you look at simply rugged silver dollar pancake. Only around $50, quality construction and it sits close and comfortable to body OWB because belt is on outside of holster so as you tighten belt, holster is that much more secure. Holster comes with made to order slots so that you can speak to them about desire for straight up or cross draw cant. Just got one for a J frame S&W 642 (similar to Ruger 100) and I do not know I have it on. I am not a 24/7 carry guy but I do carry now just because it is so comfortable.