So on a hammer gun/muzzleloader this is the first sear, the second sear is/would be the primary sear? My problem with the Kodiak 12 bore is that the left lock primary sear sheared under recoil and the secondary sear caught the hammer on the way down. I modified the primary sear to handle the extreme recoil and all is good now, 60+ 165 grn shots and no failures.

Colorado