This Thompson Center manufactured front upper tang / trigger guard screw is for the later Renegade Hunter muzzle loading rifle which has the hole completely through the stock and allows this screw to secure the tang tight to the stock and pulls the trigger guard tight up into the stock. Your muzzle loader requires the late variation stock and late variation trigger guard. This screw is in very good condition with light wear.  (file photo)

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

50 Caliber Percussion:

54 Caliber Percussion: 344487 & 359064