Fusion Pro-Series Bomar style 1911 colt pistol rear match target sight, with Black Serrated "R" (Radius Corner) target blade. This sight is professional quality, Machined from bar stock and black oxide finish. The dovetail is made for the standard 60 degree x .359 bomar dovetail cut. The blade notch is .118 wide match target width. This sight is complete with elevation screw and spring. Many shooters use this sight for Bullseye and refined target shooting.