Looking for a pictanny rail for my Savage 10 FCM 7.62x39. Bought the wrong one off Amazon and don't want to make the same mistake twice. Also looking for an optic recommendation. Attached is a picture of the factory rail.

Not sure if I want to go red dot or scope. Leaning towards a scope, it will mostly be a range toy shooting to a max distance of 200 yards. Any help will be appreciated.

Thanks !