The TAPCO AR Front Sight Tool is a four post model designed to work with the A2 front sight. Machined from 4140 steel and finished in black oxide, our tool will provide years of use and is backed by our lifetime warranty. The lanyard hole allows attachment to your key ring and provides a location to tie down the tool to prevent loss. The TAPCO Front Sight Tool can also be stored in the TAPCO Fusion Vertical Grip and SAW Style Pistol Grips. Fits the AR15, M16 and M4.