model 1920 sights

I just inheireted my grandfather's Model 1920 from 1923. Just wondering about sighting options. I have a hard time with the factory buckhorn rear ramp and was looking for another way to go. I see that Lyman made a bolt mounted peep for them at one time and I've also seen a side mount scope but being left handed those tend to give me alignment issues. Thanks for any help.

Yep, the Lyman #54 peep sight is designed for the model 1920 only but they're a needle in a haystack to find.