Quick Tip: Benefits of Witness Marking Screws
This video provides a practical gunsmithing tip on 'witness marking' screws using a Sharpie or paint pen. The technique involves drawing a line across the screw head and the surrounding component. This creates a visual indicator to quickly detect if any screws have loosened, which is crucial for maintaining rifle alignment and zero, especially after rough handling or transport during activities like 3-Gun matches. The tip is particularly useful for optics and optic mounts but is advised against for firearms where aesthetics are paramount.









