This Thompson Center manufactured second variation rear sight assembly with the flat blade is for the Renegade muzzle loading rifle with hole spacing at 13/16" apart (center to center) and is in very good condition with light wear. The mounting screws are sold separately.  (file photo)

Note: Renegade muzzle loading rifles with the following serial numbers have been observed with this part:

Percussion: 107107, 181236, 197148 & 241971

Flintlock: