Originally Posted by Drew Hause
Was once probably fitted with one of these

Has the seller obtained a letter from BBCW?
https://centerofthewest.org/explore/firearms/firearms-records/ithaca/

Letter has been sent for, but haven't gotten it yet. They had several guns they sent off for at a single time. Last week I believe.

That sight is pretty wild. I can't imagine putting one on this gun, but you know... stranger things have happened! Thanks for all the great information. When the letter comes back I'll come back with more info!