One of the MVA sight cards will work for the Axtell with just a little bit of filing. I have been successful with this option so I know that it will work. They are much thinner so you can stack 2 inserts for a custom sight if you want. I think the one you want is the Stevens/Winchester sight card.(?)

https://montanavintagearms.com/product/aperture-cards/
[Linked Image from montanavintagearms.com]

Last edited by Feedom; 05/01/20.