I just bought a 1966 Browning Double Auto trap gun from Great Lakes Sporting Arms in MI. It is used but still has the original box. As I was not around in 1966 , I need some help with the sights. The end label is marked "trap stock" and also "Hood sight". It indeed has a higher combed trap stock but the sights have me confused. The first bead is only about 8" from the receiver on the 29.5" bbl. On the muzzle is what I think is an Ithaca ray bar sight. Has anyone heard of a "Hood sight"? I have looked at many trap guns over the last few years and have never seen a "rear" bead.