Blitzkrieg Sight Post for MBUS PRO - Spike Tip, Tritium Dot, Green Ring The Blitzkrieg Components Spike Front Sight Post for the Magpul MBUS Pro sight provides superior sighting with a sharp aiming point and a bold, fast sight picture. This is a replacement sight post for the MagpulA(R) MBUS PROA(R) steel flip up sights. The sharp aiming point enables precise aiming and high confidence on difficult shots. The Tritium Dot with green ring provides 24/7 day/night capability. Our sight posts are precision machined from billet 416 Stainless Steel for an outstanding sight picture and precise fit in the Magpul MBUS PROA(R) front sight housing. Has a black oxide matte finish. Drop-In installation with no tools required. Simply unscrew the factory sight post by hand and screw in the Blitzkrieg Components sight post using the sight's elevation adjustment knob and you are ready to go. Tritium Dot: The Tritium Dot is .078 in diameter and glows green and has a green polymer ring around it. Tritium is installed by Night Fision. These provide a 24/7, always-on night capability. Features: Billet Machined 416 Stainless Steel Construction Matte black finish Tritium Dot with Green Ring at tip for 24/7 night capability Bold, Fast Sight Picture Precision Aiming Point Drops into any Magpul MBUS PROA(R) front sight housing Fit: Only fits the Steel Magpul MBUS PROA(R) sights. Does NOT fit the polymer Magpul MBUS Gen 2 or Gen 3 sights. If you have the polymer Magpul MBUS Gen 2 sights, then you need to chose one of our AR Sight Posts. If you have the MBUS Gen 3 polymer sights, then we have models specific to those.