Trijicon SRO vs RMR: Window, Size, Battery and Footprint

Trijicon’s SRO spec sheet says the SRO has an “Identical Footprint as RMR,” so both mount on the same RMR-cut slides and plates. The SRO’s window is larger. Figures below come from Trijicon’s product pages and Trijicon spec PDFs, checked November 4, 2026. The RMR column is the Adjustable LED Type 2 (RM06).

At a glance

• OpticSRO

  SRO
• OpticRMR Type 2 Adjustable LED (RM06)

  RMR Type 2 Adjustable LED (RM06)

*Battery-life footnotes appear on Trijicon’s own sheets. Window and dimension figures for the RMR Adjustable LED column are from Trijicon’s RMR spec sheet (PML4014); the SRO window and dimensions are from Trijicon’s SRO spec sheet (PML4071).

Which to pick (on paper)

• If window size is the deciding number: the SRO at .98 × .89 in vs the RMR Adjustable LED at .87 × .63 in (both Trijicon).
• If you want the lighter housing: the RMR Adjustable LED at 1.17 oz vs the SRO at 1.6 oz (both with battery, Trijicon).
• If you already have an RMR mount or plate: either, because Trijicon states the SRO footprint is identical to the RMR.

We have not range-tested these; facts below are from the makers.

Related: pistol red-dot footprint chart, new red dots 2026, Holosun 507C vs 507K, Holosun 507C X2 vs Trijicon RMR Type 2, EPS Carry vs Trijicon RMR Type 2, Holosun 507COMP vs Trijicon SRO, Trijicon RMR HD vs Holosun 507C X2, Trijicon RCR vs RMR, all comparisons.

Frequently asked questions

Sources

1. Trijicon: SRO product page
2. Trijicon: SRO specification sheet PDF
3. Trijicon: RMR Type 2 RM06 product page
4. Trijicon: RMR specification sheet PDF

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