Measure your rear sight. If it's overall length is longer than 1 inches this is the sight to use. If it is shorter than 1 inches, use #70232. (Rear sight length over 1 inches) Target Pistol Firesights Click adjustment design for windage and elevation adjustment High visibility fiber optics for target shooting and hunting Improved visibility in low light conditions CNC machined out of highgrade aluminum. Features: This model is not compatible with any Buckmark that has an optic rail 0.04, 0.06 inches fiber diameter Screw-on attachment