So a sorta-fixer Ithaca 37 followed me home, thoughts?

[Scooter22]

You got a great deal. If you need a HD shotgun I'd leave it as is and stick one of these on it. Its very tight and doesn't move. There is a little notch to index with a bead but I don't think it would slip forward. You could always add a little black RTV under it to stop any slipping. Nice shotgun.
http://www.hivizsights.com/product/mpb/