S&W - 9mm & 40 Cal. (3rd Gen) - Rear Adjustable Sight - Black Serrated

This sight is the fully adjustable rear sight which easily fits the factory dovetail of the most popular auto pistols without replacement of the factory front sight. Machined from solid steel using state-of-the-art CNC milling. Low Profile. Hardened micrometric click adjustment screws for windage and elevation. Important Information about Sights: 1. You must choose the correct sight for your pistol model to ensure proper fit. 2. Generally, due to tolerance in sight dovetails, you will have to fit the sights. 3. Fitting is generally completed with an appropriate file, and file to a friction fit. 4. If you are not good with hand tools or do not understand how to properly fit a sight, YOU should consult a gunsmith.