The Blitzkrieg Components Spike Front Sight Post for the Magpul MBUS Pro sights provides superior sighting with a sharp aiming point and a bold, fast sight picture. The sharp aiming point enables precise aiming and high confidence on difficult shots. The bold, contrasting Luminescent Green Stripe gives the shooter an eye catching sight picture that excels in both bright-light and low-light environments and against all types of backgrounds. It is very fast and very easy to see. Precision machined from billet 416 Stainless Steel for an outstanding sight picture and precise fit in the popular Magpul MBUS Pro front sight. Has a durable matte black finish. The Luminescent Green Stripe appears more yellow in daylight and glows green in low light. This gives you a bright yellow contrast stripe in daylight and a bright green glowing stripe in low light. Simple Drop-In installation with no tools required. Simply unscrew the factory sight post by hand and screw in using the sight's elevation adjustment knob and you are ready to go. The Luminescent (Glow) Stripe glows very bright when charged for a few seconds in day light or with a flashlight, and the glow brightness dissipates gradually over a few hours. Additionally, the bright glow makes the sight dramatically easier to pick up against dark targets and background clutter where black sight posts get completely lost. Take your iron sight capability to the next level.