This Thompson Center manufactured blue finished early variation foreward recoil lug with the flat mating section is for the earlier Omega in-line muzzle loading rifle with the flat spot on the underside of the barrel in which this part attaches to. This early variation foreward recoil lug is in very good condition with light wear.  (file photo)

Note: Thompson Center Omega muzzle loaders with the following serial numbers have been observed with this part: 15819