It is supposed to be set up for short, long and long rifle.
Makes me wish I hadn't traded off mine as my dad bought it for me.
I'm planning on completely redoing the rifle but if it has some sort of collector value then I may just hold off.
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If you wish to change the front sight, you may have to consult a gunsmith for ideas.
Mine was not feeding well at first.
It's indigenous to the Marlin 81.
The problem with this particular rifle is in feeding a round from the magazine into the chamber.