I have a Henry .327 Federal. The only thing I don't like is it is not drilled on the side of the receiver for a Lyman sight.
The Marlin is no longer drilled and Lyman will not make a sight for the AE. RifLes.
The Lyman sight is superior to the Williams sight in that the stem is quickly removable, the elevation scale can be adjusted, marked and replaced easily and you can adjust windage with out tools.
I have an XS sight on a .32 Magnum Marlin but it is nit a good sight for a cast bullet small game hunter.