Marlin 39A are great guns, the one I had was a great shooter. Your's must be fairly old, they started drilling and tapping all models of the 39a when they introduced the Golden 39A in 1957. The one I bought in 1982 came drilled and tapped, with a scope base.
Wish I had never traded mine off, getting another on is on my "list".
Wish I had never traded mine off, getting another on is on my "list".