Other than paint, any

Of course my eyes were much sharper then. This was the mid-70’s. I shot snakes, turtles, frogs, cottontails, and squirrels. The sights were well regulated on mine but I got my mothers most garish fingernail red polish she had and Dr.’d the front sight to my liking. It stayed on there perfect for years. Likely long after it was stolen.

nice dark and matte.