The factory replacement sight blade kit, rear, 0.126 inches, blue outline, is engineered specifically for compatibility with Smith & Wesson K frame, L frame and N frame revolvers. This precision-manufactured component is designed to replace the rear sight blade, ensuring optimal alignment and accuracy. The sight blade features a 0.126 inches height and a distinctive blue outline, enhancing visibility and target acquisition in various lighting conditions. Fabricated in the United States, this kit adheres to stringent quality standards, providing a reliable and durable solution for firearm enthusiasts seeking to maintain or upgrade their Smith & Wesson revolvers.