Below are all the current Trijicon RMR HD red dot sights. The RMR HD has an RMR Footprint and is Made in the USA. 

The RMR HD is one of the latest pistol optics from Trijicon and incorporates some new features that users were demanding. The RMR HD features a multi-reticle system, with a 55 MOA outer ring, and either a 1 MOA or 3.25 MOA center dot. The outer ring can be toggled on or off.

The RMR HD also features a top loading battery, downrange brightness sensors, and Trijicon's patented "Owl Ears" housing design making it super tough and durable.

The battery life ratings and waterproof ratings on the RMR HD are fantastic, and it's housing is made out of strong 7075 T6 Aluminum.