Rick, the receiver is tapped with 2 holes about 1" spacing in the top middle , but there are no extra holes tapped in the barrel also the tang is tapped for a tang sight. The west book on page 7-11 talks about the favorite with" model 1915" on the upper tang , page 2129 of the 29th edition of the blue book says 15+425, 1912-1917 11,500 produced, on page 5-20 of Wests book it shows a drawing of a sporting rear sight and it looks like the sides are beveled,they probably took it out of a winchester catalog. on page 5-21 the front sight looks like Gene B's. Don
