The H&K rear sight retaining screw is engineered to provide secure and reliable attachment for the rear sight on the H&K Mark 23 firearm. This component is precision-manufactured to meet the exact specifications required for optimal performance and compatibility with the H&K Mark 23 model. The screw is finished in black, ensuring a seamless aesthetic integration with the firearm's design. Constructed from high-quality materials, it offers durability and resistance to wear, ensuring long-term functionality. This retaining screw is an essential component for maintaining the accuracy and stability of the rear sight, contributing to the overall performance and reliability of the firearm.