Abstract: A sighting system for a shotgun useful for a user to align firing trajectory with a target. The system includes a sight rigidly fixed at a forward end of the shotgun barrel, and a rearward, transient sighting element which is utilized to establish concurrent sighting alignment on a single target for (i) a first line of sight coaxial with a shotgun bore and (ii) an adjustable, second line of sight defined by a line connecting the sighting bead of the forward sight and the aligned aperture of the rearward sighting element with the target. An adjustable comb is coupled to the stock of the shotgun and is raised to and locked at a proper height to define a contact reference location on the user's face. In this position, the shooter's eye is centered on the second line of sight and the transient sight element may be removed. Inter-changeable components permit selection of variable heights and sizes for both the forward sight, bead, blade and rearward sight element.