Loading... Please wait...An economical level to fill the dovetail left behind when you remove the rear barrel sight on a rifle. It's not as handy to use as a level on the front sight, but it makes a good dovetail filler when you don't want to spend the money to buy a new front sight with level.
I recommend gluing these into the dovetail with some loc-tite. The level can be damaged by drifting it in with a hammer and punch.