22/410 ???

I recently picked up a 22/410 with the button barrel selector on the side of the receiver. The gun is in beautiful condition and the sellers father had it since new. My question is about the front sight, it is a bead. The rear sight is the typical open sight with the elevator. The gun shoots dead on, with the 410 slightly to the right.
Is this how it came ?? I can't see any " marks " on the barrel to even suggest there was a ramp front sight originally .