Monsai52 said:
I know this thread is 5 months old, but yes, NECR (New England Custom Gun) offers either a "peep" or ghost sight that mounts on the rib instead of one of the scope rings. I just picked up a nice No1 Tropical in 375 H&H and will be ordering one of the ghost sites for it.
https://www.newenglandcustomgun.com/products.php?cat=338
Best regards,
The problem with that is that these rifles have target scope bases, not the proprietary Ruger bases.
As I noted above, any target aperture rear sight (Anschutz, Kimber, etc.) designed for a ca. 3/8" grooved receiver should work or could easily be made to work (i.e. with shims). The front base is good to go for a target aperture sight.
Gatling - if that is your rifle above, you are very lucky, as there were only 100 of those higher grade Lyman comemmoratives made
But then, mine is one of only about 40 unmarked overrun guns, so . . . .