Hello, I have been hunting with handguns for big game for the last twelve years after becoming an amputee. Recently I stumbled upon a device that I feel compelled to mention on this forum. I field tested a See-All open sight on my 500 revolver this fall and was very impressed. the darn thing looks so simple that I was skeptical at first, but I am now a believer in the product. My eyesight isn't what it used to be and in many light situations I found myself struggling to focus on the front sight, with this it is just there. kind of like a reflex sight but there is no heads up display to fail or lens to get dirty. My hope is that this might help someone else out.