Ameriglo XD191R Tritium Rear Sight for Springfield XD/Hellcat Green Tritium White Outline

The Ameriglo XD191R is a direct-fit replacement rear sight from the Classic Tritium line, purpose-built for the Springfield Armory XD family and the Hellcat (non-OSP). Sold as a single rear unit, this sight lets the shooter upgrade the back of an existing sight picture with two green tritium lamps framed by white outlines for fast, intuitive low-light indexing.

The XD191R is built on a steel housing finished in a low-glare black, sized at .270" tall with a .165" square notch. The two tritium vials are set into the rear face as a clean 2-dot configuration, delivering a familiar sight picture that pairs naturally with most Ameriglo Classic-series front posts.

The Classic styling keeps the profile flush, the non-OSP variant is intended for standard (non-optics-ready) pistols, and Ameriglo lists this sight as compatible with all Springfield XD models, the Hellcat (non-OSP), and select Sig Sauer pistols sharing the same rear dovetail. Drop-in to convert a stock XD or Hellcat into a self-illuminating night-sight setup.