The Trijicon 600921 Suppressor/Optic Height Sights are three-dot tritium iron sights designed to maintain reliable aiming in both bright and low-light conditions, with green lamps that are warranted for 12 years from the date of manufacture and a green/tritium white outline front and rear that enhance contrast. These suppressor-height sights clear the added height of a mounted suppressor, enabling quick, repeatable sight alignment on target, while still serving as dependable back-up iron sights when paired with a Trijicon RMR. Front sight width is 0.14 inches, front height 0.4345 inches, and rear height 0.4656 inches, creating an elevated sight plane compatible with Springfield Armory XD, XD-M, XD Mod.2, and XD-S platforms (excluding XD-S OSP). Crafted with Tritium front and rear elements for consistent visibility in dim environments, these green-illuminated sights provide a clean 3-dot configuration that supports rapid target acquisition without sacrificing precision. Ideal for shooters who run suppressors or want a reliable back-up option, Trijicons suppressor-height design delivers a durable, field-ready solution for dependable handgun sighting across a range of lighting situations.