I have a new WGRS-7400 sight for the 7600 if you'd be interested in it. It looks like the holes line up the same but you would have to change to 6-48 screws. PM me (again) if you're interested.
https://www.midwayusa.com/product/100599084?pid=324750

Wag more, bark less.

The freedoms we surrender today will be the freedoms our grandchildren will never know existed.

The men who wrote the Second Amendment didn't just finish a hunting trip, they just finished liberating a nation.