Ruger “hump” or “no hump” sight?

[fatelvis]

Hello! I just bought a Ruger single six revolver, and it does not have a rear site. Do I need a hump site, or a no hump site? I attached a picture of the top Mortis on the revolver. Thanks!

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[Bill K]

Contact Ruger with model/serial number and get the proper replacement part from them. You will probably only need the center rear blade assembly, which fits in between the risers shown.

 

[GeoW]

You don't have a Flattop so the risers must be called humps?