I used a simmons prodiamond 1x-5x on my ML for a few years and it worked great.Since then i have been upgrading all my scopes to leupold and have replaced the prodiamond with a 2x-7x var X II ML/shotgun leupold.Both these scopes worked for me. You will just have to determine how much money you want to put in a scope.Which ever one you get spend the extra money and buy good scope covers like the butler creek flip open.Good scope covers add years to the life of you scope.