It is the larger diameter globe that came on the L39A1. It takes Anschutz inserts. I'm currently using the clear plastic inserts rather than the metal. The sight picture is indistinguishable from my other match rifles that mount modern sights (Centra/Redfield Palma/RPA) and Gehmann apertures. The gun really intrigues me with brilliant accuracy with ball match ammo but looks and operates in such an antique almost rough manner. A real wolf in sheeps clothing.