This is a Marbles Arms tang sight (aka Peep Sight) That fits 3 different rifle. It is for Marlin 39A, 1889, 1892 (orig), 1897, 25, 27, and 29 rifle, Stevens Favorite (old) 30G and the Ballard number 8 Union Hill. It comes with 3 different sight apertures (1/2 inch diameter with .055 hole; 1/2 inch diameter with .102 hole; 3/4 inch diameter with .032 hole). Hole spacing on the base of the sight is aprox 1.125 center to center, and the height adjustment is 1.680 inches to 2.015 inches with an 21 degree angle. Mounting screws are NOT INCLUDED with the tang sight, so if you need those screws they can be purchased in the option box below.
