Duty Arms IndexTrijicon RMR (Type 2) vs Holosun 508T
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.
Trijicon RMR (Type 2)
Trijicon RMR Type 2 RM06 (3.25 MOA)
- Agencies (current entry)
- 11
- Share of agencies with a sourced pistol optic
- 10.5%
Trijicon RMR 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.
Holosun 508T
Holosun HE508T-RD X2
- Agencies (current entry)
- 4
- Share of agencies with a sourced pistol optic
- 3.8%
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 | Trijicon RMR (Type 2)Trijicon RMR Type 2 RM06 (3.25 MOA)10 of 17 fields published | Holosun 508THolosun HE508T-RD X211 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. | RMR[1] | RMR Footprint[2] |
| EmitterOpen (exposed emitter) or enclosed, as the maker describes it. | Not published | Not published |
| Mounting notes (maker's) | Not published | Not published |
| Optical | ||
| Reticle / dot size | 3.25 MOA Dot[1] | 2 MOA Dot & 32 MOA Circle[2] |
| Reticle colour | Red[1] | Not published |
| Window size | Not published | 0.63" × 0.91"[2] |
| Brightness settings | Not published | 8 Daylight & 4 NV[2] |
| Night-vision settings | Not published | Not published |
| Power | ||
| Battery | 1 CR2032 Lithium Battery[1] | CR1632[2] |
| Battery life (maker's stated)As stated, usually at a mid brightness setting; not comparable across makers unless the setting matches. | Over 4 years of continuous use (when used at 70ºF (21ºC)) at setting 4 of 8.[1] | 50,000 Hours[2] |
| Battery access | Not published | Not published |
| Auto-on / auto-brightness | Not published | Shake Awake Technology[2] |
| Physical | ||
| Dimensions | 1.8 in x 1.1 in x 1 in[1] | 1.78" × 1.15" × 1.15"[2] |
| Weight | 1.2 oz. (34.02g)[1] | 2 oz[2] |
| Housing material | Forged Aluminum[1] | Titanium[2] |
| Water rating (maker's stated) | waterproof to 20 meters (66 ft.)[1] | IP67[2] |
| Price | ||
| Maker list price | $779.00[1] | Not published |
| Maker notes | Footprint: the maker states the RMR Type 2 has identical physical dimensions and mounting footprint to the original RMR Type 1. | Battery life is the maker's figure for setting 6. |
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
Trijicon RMR (Type 2)
11 agencies with a current, sourced entry (10.5% of 105 agencies with a sourced pistol optic).
Mounted on (pistol, agencies): Glock G17 MOS (2), Glock G17 (1), Glock G17 Gen5 (1), Glock G19 Gen5 MOS (1).
Holosun 508T
4 agencies with a current, sourced entry (3.8% of 105 agencies with a sourced pistol optic).
Mounted on (pistol, agencies): Glock G17 (1), Glock G17 Gen5 MOS (1), Glock G19 MOS (1), Glock G48 (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.
Trijicon RMR (Type 2)
No notices on file.
Holosun 508T
No notices on file.
We add notices only with a primary document.
Sources
- [1] Trijicon RMR Type 2 Red Dot Sight (RM06) · Trijicon · accessed Oct 11, 2026 · archive
- [2] Holosun HE508T-RD X2 · Holosun · accessed Oct 11, 2026 · archive