Trijicon RMR® Type 2 Red Dot Sight

Last reviewed: 2026-04-18 by Jake Terry, FFL07/SOT3, competitive shooter.

For shooters who demand a red dot optic that survives daily carry, duty holster wear, and slide reciprocation on semi-automatic handguns, the Trijicon RMR Type 2 sets the durability benchmark. Built around a patented housing geometry that channels impact forces away from the lens, this miniature reflex sight has logged hundreds of thousands of rounds on agency-issued Glocks, M&P pistols, and 1911s without failure. The 3.25 MOA dot size — Trijicon’s most popular reticle — provides the Goldilocks balance: small enough for surgical accuracy on a 25-yard square, large enough to acquire in 0.2 seconds from low ready.

Behind the Glass

Trijicon machines each RMR housing from 7075-T6 aluminum billet, then applies Type III hard-coat anodizing for corrosion resistance in salt fog and sweat exposure. The lens assembly rides in a shock-isolated cradle — not directly bolted to the outer shell — so drop impacts dissipate through the housing walls rather than shattering the optic window. Electronics run on a single CR2032 battery good for four years of continuous use in automatic brightness mode (ambient light sensor adjusts dot intensity from 1 to 1,000 lux). Manual mode offers eight discrete brightness settings, accessible via side-mounted toggle buttons. After 16.5 hours of inactivity, the optic reverts to automatic mode to ensure readiness. You can lock the buttons entirely to prevent inadvertent adjustment during reholstering or bag carry.

Specs at a Glance

The RMR Type 2 maintains the same physical dimensions and mounting footprint as the original RMR Type 1, ensuring compatibility with legacy mounting solutions. For pistols with factory optics-ready cuts (Glock MOS, Springfield OSP, Walther PDP, HK VP9 Optics Ready), Trijicon offers the AC32064 mounting kit with screws and sealing plate to achieve proper co-witness height and waterproof seal. The optic is also compatible with night vision devices — all brightness settings fall below the NVG bloom threshold that washes out Gen 3 tubes. Explore the full Trijicon RMR category for additional dot sizes and fixed-brightness models.

Matching It to Your Build

The 3.25 MOA dot suits general-purpose duty, concealed carry, and competitive shooting where you need sub-2-inch groups at 15 yards without sacrificing close-range speed. Shooters who primarily engage paper or steel inside 10 yards may prefer the faster acquisition of a 6.5 MOA dot; precision-oriented competitors and hunters stretching past 50 yards often choose the 1 MOA dot for tighter hold. Button lockout is non-negotiable for appendix carry or duty holster use — it prevents brightness changes when fabric or Kydex presses the side buttons during draw.

At the Range

Trijicon recommends bore-sighting at 10 yards, then confirming zero at 25 yards with five-round groups. Each click of the windage or elevation screw moves point of impact 1 MOA (roughly 1 inch at 100 yards, 0.25 inch at 25 yards). Torque mounting screws to 15 inch-pounds using a quality screwdriver with properly sized bits — over-torquing can crack the mounting bosses on polymer-frame pistols. Apply a drop of blue Loctite 242 to threads, but avoid red (permanent) Loctite, which complicates battery replacement. Clean the lens with lens tissue and isopropyl alcohol; avoid abrasive cloths that scratch the anti-reflective coating. Store with the battery removed if the optic will sit unused for more than six months.