I have Mueller Speed Shot mounted on a Burris PEPR on a S&W Optic Ready Carbine. The scope is 1-4.5 and has a dot reticule that can be illuminated or not. I've used it in 3 gun, AR tactical classes and known distance (out to 400 yards) shoots. I've had kids and first time shooters banging steel with it at 200 meters. Just place the dot on the target and squeeze. It is silly fun. I don't even have BUIS on that rifle because the scope doesn't depend on batteries. Use the black dot during the day, turn it on in low light. That rifle/scope combo has been banging around in the back of my truck (in a case of course) for over a year and hasn't lost zero.