Real Avid Pivot Pin Tool, Designed for Installing AR Pivot Pins, Red Nylon AVAR15PPT Installing a pivot pin is a small step that can quickly become a giant pain in the neck. Meet the AR15 Pivot Pin Tool - the one tool guaranteed to take the nail biting" pin-launching task of installing a pivot pin and turn it into something you might actually look forward to. Align the guide" insert the spring and detent pin" slide the pivot pin into place. Click. Snap. Done.