The Trijicon RMR HD Red Dot Sight (SKU RMHD2-C-3200002) is a 1× open-emitter miniature red dot sight running a switchable multi-reticle system — a 3.25 MOA red dot, a 55 MOA segmented circle, or both together as a circle-dot — on the Trijicon RMR footprint, powered by a top-loading CR2032 in a forged aluminium housing.
Two changes define the HD. The battery loads from the top, so a cell change no longer means unmounting the sight and re-zeroing it, and a forward-facing light sensor reads the light in front of the shooter rather than behind, for smarter automatic brightness. The window is larger than the RMR Type 2's, and the housing is the same forged aluminium, sealed and waterproof.
How It Compares
Prefer a finer centre dot? The RMR HD 1.0 MOA red dot sight is otherwise identical. Want the classic, lower-priced sight without the circle reticle? The Trijicon RMR Type 2 red dot sight. For a fully sealed emitter, the Trijicon RCR enclosed red dot sight, and for the tallest competition window, the Trijicon SRO red dot sight. Browse every optic on the RMR footprint, the Trijicon RMR and SRO range and the adapter plates that fit them, or read our Trijicon buyer's guide and red dot size chart.
Ideal For
- Practical shotgun and 3-Gun stages, where the 55 MOA circle frames close targets fast
- Civilian Service Rifle and practical rifle, using the circle-dot close and the dot alone at distance
- Section 1 long-barrelled pistols and licensed revolvers cut for the RMR footprint
- Airsoft gas blowback builds wanting a top-loading battery rather than an annual re-zero
Key Features
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Reticle: Multi-reticle system — a 3.25 MOA dot covering about 3.4 in (86 mm) at 100 yards, a 55 MOA segmented circle, or both as a circle-dot, in red
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Illumination: Adjustable LED with a forward-facing light sensor for smarter auto-brightness
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Window: Larger viewing window than the RMR Type 2
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Power: One CR2032 coin cell in a top-loading tray — change it without unmounting the sight or losing zero
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Footprint: Trijicon RMR footprint — fits RMR-cut slides and RMR adapter plates
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Housing: Forged aluminium, waterproof, in Black
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Adjustment: Windage and elevation adjustable
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Origin: Made in USA
Technical Specifications
| Optic Type |
Open emitter miniature red dot sight |
| Magnification |
1× (non-magnifying) |
| Reticle |
3.25 MOA dot and 55 MOA segmented circle, red — selectable individually or as a circle-dot |
| Illumination |
Adjustable LED with forward-facing light sensor |
| Battery |
One CR2032 coin cell, top-loading tray |
| Footprint |
Trijicon RMR footprint |
| Adjustment |
Windage and elevation |
| Housing |
Forged aluminium |
| Finish |
Black |
| Water Resistance |
Waterproof |
| Country of Origin |
Made in USA |
| SKU / MPN / UPC |
RMHD2-C-3200002 / RMHD2-C-3200002 / 719307619227 |
What's Included
- Trijicon RMR HD red dot sight (RMHD2-C-3200002)
- CR2032 battery
- Mounting hardware
- User manual
Warranty
Covered by Trijicon's manufacturer's warranty. Keep your order confirmation as proof of purchase and register the optic with Trijicon after fitting; we handle warranty claims for you from the UK.
UK Delivery & Support
UK-stocked and dispatched tracked from our UK warehouse — no import duties or customs delays — backed by UK-based support and Trijicon's warranty.
Frequently Asked Questions
Does the Trijicon RMR HD use the same footprint as the RMR Type 2?
Yes — the Trijicon RMR HD mounts on the Trijicon RMR footprint, so it fits RMR-cut slides and any adapter plate machined for an RMR, exactly as the RMR Type 2 red dot sight does.
Will the Trijicon RMR HD fit a Glock MOS, Springfield OSP or Walther PDP?
The RMR HD uses the RMR footprint, so it fits Glock MOS, Springfield OSP and Prodigy, Walther PDP and H&K VP9 optics-ready slides with the correct RMR adapter plate — our Trijicon RMR footprint mounting kit (AC32064) supplies that plate, screws and hex key. Slide cuts vary between production runs, so confirm your pistol's cut before ordering.
What is different about the RMR HD compared with the RMR Type 2?
The Trijicon RMR HD adds a top-loading CR2032 battery tray, so the cell changes without unmounting the sight or losing zero, and a multi-reticle system giving a 3.25 MOA dot, a 55 MOA segmented circle or both combined — where the RMR Type 2 has a single fixed dot and a bottom-loading battery.
What reticle options does the RMHD2-C-3200002 give?
It switches between a standalone 3.25 MOA red dot for precision, a 55 MOA segmented red circle, and the two combined as a circle-dot for fast close-range work.
Can I change the RMR HD battery without removing the optic?
Yes — the RMR HD takes a single CR2032 in a top-loading tray, so the battery is replaced from above without unmounting the sight and without disturbing your zero.
Which dot size should I choose in the RMR HD?
This is the 3.25 MOA version. The 3.25 MOA dot covers about 3.4 in (86 mm) at 100 yards, and Trijicon also offers the RMR HD 1.0 MOA red dot sight; our red dot size chart compares them.
