Duty Arms IndexHolosun 509T vs Trijicon RMR HD
Data coverage: Adoption is based on 105 agencies in the Duty Arms Index with a current, sourced pistol optic entry; SWAT / tactical-unit entries are not counted. Counts include only current entries with a public source; agencies not yet in the index, or without a sourced entry for this item, are not counted, so treat shares as a picture of the Duty Arms Index, not of every agency. These counts cover US agencies only; agencies outside the US are not included here (see agencies by country). Data last updated Oct 11, 2026.
Holosun 509T
Holosun HE509T-RD X2
- Agencies (current entry)
- 17
- Share of agencies with a sourced pistol optic
- 16.2%
Trijicon RMR HD
Trijicon RMR HD (3.25 MOA dot / 55 MOA ring)
- Agencies (current entry)
- 5
- Share of agencies with a sourced pistol optic
- 4.8%
Representative photo: Trijicon RMR Type 2 (RMR HD not available under a free license), shown on an S&W M&P. Photo: Tony Webster, CC BY 2.0, via Wikimedia Commons. Model photo, not the agency's own firearm.
Maker specs, side by side
Print evaluation memoValues are copied exactly as each maker publishes them, with a numbered source for each; we don't test, convert units or rate anything. “Not published” means the maker's current spec page or manual doesn't list it. Columns are in order of agency count in the index, not preference. Shaded rows differ.
| Version shown | Holosun 509THolosun HE509T-RD X213 of 17 fields published | Trijicon RMR HDTrijicon RMR HD (3.25 MOA dot / 55 MOA ring)12 of 17 fields published |
|---|---|---|
| Mounting | ||
| Mounting footprintThe maker's footprint name (RMR, ACRO, RMSc, DeltaPoint Pro, K...). It must match the slide cut or adapter plate. | 509T Footprint[1] | IDENTICAL FOOTPRINT AS RMR[2] |
| EmitterOpen (exposed emitter) or enclosed, as the maker describes it. | Fully enclosed emitter[1] | Not published |
| Mounting notes (maker's) | RMR to 509T Adapter Plate[1] | Not published |
| Optical | ||
| Reticle / dot size | 2 MOA Dot & 32 MOA Circle[1] | 3.25 MOA dot with 55 MOA Selectable Reticle[2] |
| Reticle colour | Not published | Red[2] |
| Window size | 0.66" x 0.9"[1] | Not published |
| Brightness settings | 8 Daylight & 4[1] | Nine brightness settings with multiple modes[2] |
| Night-vision settings | Not published | Not published |
| Power | ||
| Battery | CR1632[1] | CR2032[2] |
| Battery life (maker's stated)As stated, usually at a mid brightness setting; not comparable across makers unless the setting matches. | 50,000 Hours[1] | Over 3 years of continuous use in brightness setting 5, dot only[2] |
| Battery access | Not published | TOP-LOADING BATTERY[2] |
| Auto-on / auto-brightness | Shake Awake Technology[1] | Not published |
| Physical | ||
| Dimensions | 1.6" x 1.16" x 1.13"[1] | 2.15 in x 1.27 in x 1.19 in[2] |
| Weight | 1.27 oz[1] | 1.69 oz. (47.91g)[2] |
| Housing material | 7075 T6 Titanium[1] | 7075-T6 aluminum[2] |
| Water rating (maker's stated) | IP67[1] | waterproof up to 66 ft. (20 m)[2] |
| Price | ||
| Maker list price | Not published | $1,019.00[2] |
| Maker notes | Battery life is the maker's figure for setting 6. Mounting notes: adapter plate included with the optic, as listed by the maker. | — |
Specs checked against the maker's page on Oct 11, 2026. Makers revise pages; confirm with the manufacturer before purchase. Spotted an error? Send a correction with a source. How we compile specs.
Agency adoption and pistol pairings
Holosun 509T
17 agencies with a current, sourced entry (16.2% of 105 agencies with a sourced pistol optic).
Mounted on (pistol, agencies): Glock G45 Gen5 MOS (5), Glock G45 MOS (4), Glock G47 MOS (4), Glock G45 (2).
Trijicon RMR HD
5 agencies with a current, sourced entry (4.8% of 105 agencies with a sourced pistol optic).
Mounted on (pistol, agencies): Glock G17M (1), Glock G19 Gen5 MOS (1), Glock G19M MOS (1), Glock G45 MOS (1).
Counts are agencies (not officers or units) with a current entry backed by a public source; SWAT / tactical-unit entries are not counted. 105 agencies have any sourced pistol optic in the index.
Notices
Recalls, safety statements and agency actions, dated and linked to the original document. Listed the same way for every maker; facts only, no commentary.
Holosun 509T
No notices on file.
Trijicon RMR HD
No notices on file.
We add notices only with a primary document.
Sources
- [1] Holosun HE509T-RD X2 · Holosun · accessed Oct 11, 2026 · archive
- [2] Trijicon RMR HD Red Dot Sight · Trijicon · accessed Oct 11, 2026 · archive