The Blitzkrieg Components Orange w/ Tritium Dot Flat Circle Dot Front Sight Post for the Magpul MBUS PROA(R) sights are precision machined from billet 416 Stainless Steel for an outstanding sight picture and precise fit in the popular Magpul MBUS PROA(R) front sight housing. Has a matte black oxide finish. The Tritium Dot is larger for maximum brightness. It is very fast and very easy to see.