I have a mos g19 gen slide with leupold delta point pro. .460 tall makes great cowitness with the red dot. Flawless quality and great response from customer service with help on what sight would work best. Extremely happy with the purchase. Only downfall is not dawsons fault. It is not many holster companies accommodate that tall sight so have to get custom order. No problem either way well worth it and money well spent.