The Bomar BMCS Cut differs from the standard Bomar cut. In that, in the BMCS cut, the rear sight's elevation screw fits directly into threads cut into the top of the pistol's slide.
Sight Details:
FITS Bomar BMCS Cut pistols.
Dawson Adjustable Black Rear, Standard Notch Width Serrated
REQUIRES .160" to .200" Tall Front Sight
Easy to Install - Tools, Hardware, and Instructions Included