Trijicon RMR® Type 2 Red Dot Sight

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

The Trijicon RMR Type 2 Adjustable LED is a slide-mounted reflex sight built to survive the battering cycle of a reciprocating pistol slide. Trijicon engineers the Type 2 housing with a patented shape that absorbs impact and diverts mechanical stress away from the lens assembly, a critical upgrade over earlier miniature red dots that cracked under slide acceleration. The 6.5 MOA dot is the largest reticle Trijicon offers in the LED-powered RMR family—by design. You acquire the dot faster in close-quarters engagements, and the larger subtension compensates for vision impairments common among aging shooters or those recovering from eye surgery. The optic runs in automatic mode, adjusting brightness to ambient light via a top-mounted sensor, or in manual mode, letting you set a fixed brightness level via side-mounted push buttons. Manual mode persists for 16.5 hours after the last button press, then defaults back to automatic so the optic is ready when you need it. Both modes support night-vision devices. The RMR Type 2 shares the identical mounting footprint and overall dimensions of the original Type 1, so existing holsters, plates, and mounting solutions carry forward without modification.

Glass & Internals

Trijicon machines the Type 2 housing from forged aluminum and applies a matte black hard-anodized finish. The lens is multi-coated to reduce glare and increase light transmission across the visible spectrum. The LED emitter sits behind the lens, projecting a 6.5 MOA dot that remains parallax-free within the optic’s window. Two side-mounted buttons control eight brightness settings in manual mode; in automatic mode, the sensor varies intensity from near-zero in total darkness to full power in direct sunlight. A button-lock feature disables manual adjustment to prevent inadvertent mode changes during holster draw or administrative handling. The RMR draws power from a single CR2032 lithium battery, accessible from the top without removing the optic from the slide. Battery life in automatic mode exceeds four years of continuous operation under typical mixed-light conditions. The optic is waterproof to 20 meters and rated for temperature extremes from -60°F to +160°F. Trijicon tests each unit to withstand slide-ride forces on 9mm, .40 S&W, 10mm, and .45 ACP handguns, as well as recoil from rifles and shotguns when mounted on receiver rails.

Specs at a Glance

Factory optics-ready pistols from Glock (MOS), Springfield (OSP), Walther (PDP), and H&K (VP9 Optics Ready) require the Trijicon RMR mounting kit (AC32064) to achieve proper sight height and screw engagement. Aftermarket milled slides typically accept the RMR directly with the included screws. You can explore the full range of Trijicon slide-mounted optics in our Trijicon RMR category.

Best Use Cases

The 6.5 MOA dot is purpose-built for shooters who need speed over precision at typical handgun distances—inside 25 yards. Law enforcement officers working close-quarters scenarios, concealed-carry permit holders prioritizing rapid threat engagement, and competitive shooters in USPSA Carry Optics division all benefit from the larger dot. The automatic brightness mode eliminates manual adjustments when transitioning from indoor to outdoor environments or from bright daylight into shadowed structures. The manual mode with button lock is preferred by military users who need a fixed brightness setting that won’t shift during multi-day operations or when working under night-vision goggles. Hunters using handguns for medium game at woods distances—under 50 yards—gain the advantage of a fast-acquiring aiming point without the fine-tuning demands of a smaller MOA dot. The optic’s battery-access design lets you swap cells in the field without losing zero, a feature critical for extended deployments or training courses where downtime is costly.