Ruger RXM optic footprint: what red dots fit

Compact open-emitter carry optic on the RMSc footprint with red, green, and MRS variants

RMR-footprint enclosed-emitter carry and duty optic with a larger sight window

Slim RMR-footprint dot with a large 8 MOA reticle and Cyelee's STIG-RS lens treatment

RMR carry optic with 3 MOA dot and 45 MOA circle-dot choices in a shorter housing.

Open-emitter RMR-footprint red dot with a wide window, side-loading CR1632, and a switchable 3 MOA + 32 MOA MRS reticle.

Green-dot version of the open-emitter RMSc Osight K, with a 6 MOA green dot, side-loading CR1620, and motion sensor activation.

Entry-level open-emitter RMSc red dot with a 6 MOA dot, side-loading CR1620, and motion sensor activation.

Enclosed-emitter red dot on the RMSc footprint with a switchable 2 MOA dot and 32 MOA circle, side-loading battery, and IPX7 sealing.

Enclosed-emitter green dot on the RMSc footprint with a side-loading battery and a 75,000-hour runtime, at a value price.

Enclosed-emitter 6 MOA red dot on the RMSc footprint with a side-loading battery, motion sensor, and IPX7 sealing for slim carry guns.

RMR-footprint open-emitter competition optic with a wide window and multi-reticle options

Large-window RMR-footprint competition optic with 2 MOA dot and 38 MOA circle options

Enclosed-emitter RMSc-footprint carry optic with a low-profile compact housing

Large-window RMSc-footprint multi-reticle optic for compact pistols and shotgun plates

One-ounce enclosed-emitter dot on the slim RMSc cut for carry slides

Fully enclosed RMR-footprint pistol dot with a gas-filled housing and side-loading CR1620

Large-window RMR competition optic with a 6 MOA red or green dot and 1 MOA adjustments.

RMSc open-emitter carry dot with a protected 20mm window and side-loading CR1632.

Large-window 6 MOA dot for RMSc and Holosun K mounting patterns.

Large-window RMR optic with 3 MOA dot and 45 MOA circle-dot reticle options.

Enclosed 3 MOA RMSc optic with a side-loading battery and 6.25mm deck.

Multi-reticle micro red dot with solar failsafe and shake awake

Third-gen multi-reticle pistol dot with photodiode sensor, Solar Failsafe, and RMR footprint

Titanium-housed open-emitter micro red dot on the RMR footprint with a larger window than the 507C.

American-made competition optic with excellent glass clarity

Original Osight reflex sight on the RMR footprint with a single 3 MOA dot, magnetic charging cover, and aluminum housing.

Enclosed-emitter RMSc red dot with a magnetic charging cover, OAL housing, and a 2 MOA + 32 MOA multi-reticle system.

Enclosed-emitter red dot built on the DeltaPoint Pro footprint, with a 0.91 x 0.71 inch window, switchable 2 MOA dot and 32 MOA circle, and a side-loading CR1620 tray.

Open-emitter RMR-footprint red dot with a wide window, OAL housing, and a magnetic charging cover for rechargeable operation.

Enclosed-emitter duty red dot on the RMR footprint with the AMRS five-reticle system and a field-swappable side-loading CR1632 battery.

Duty-rated enclosed-emitter red dot on the RMR footprint with a 2/6+32 MOA multi-reticle system and a magnetic charging cover.

An RMR-footprint open dot with three selectable reticles, a 50,000 hour CR1632, IPX67 sealing, and a Picatinny adapter in the box at $329.99.

Sub-half-ounce micro red dot on the Shield RMSc footprint for P365 and similar carry pistols

Full-size SIG optic for P320 X-series and similar platforms

Budget closed-emitter pistol red dot that ships with both RMR and Glock MOS plates

Mid-tier RMSc-footprint micro red dot with Shake N' Wake auto-on, recessed hood for lens protection, and a clean 3 MOA dot, $269 (red) or $299 with tritium.

Large-window competition pistol dot with selectable 2 and 6 MOA reticles

Titanium RMR-footprint pistol dot with a large aspheric window and selectable reticles

Closed emitter micro pistol optic with solar assist on the Shield RMSc footprint

Closed-emitter DPP-footprint pistol red dot with solar assist and a multi-reticle.

All-purpose DPP-footprint pistol red dot with top-load CR2032 and Glock MOS plate.

Large-window pistol red dot on the DeltaPoint Pro footprint with top-load battery

Camo RMSc-footprint hunting red dot for handguns, shotguns, and scout-style mounts

Solar-powered enclosed pistol optic with direct SIG P320 fit and DPP footprint compatibility

The original RMSc that defined the slim-pistol footprint standard. UK-made glass-edition reflex sight with a 4 MOA dot, $379, the platonic Shield-cut optic.

SIG's enclosed-emitter pistol red dot on the RMSc footprint, with MOTAC motion activation and a side-loading CR1632.

Trijicon's enclosed-emitter pistol red dot on the RMR footprint with top-load battery

The original pistol red dot that defined the category

Green-LED 2.5 MOA version of the SRO announced May 2026: same wide circular window, RMR footprint, and top-loading CR2032, in black or coyote brown.

The value Holosun K-series. Single 6 MOA dot, Shake Awake, side-loading CR1632, and the K Series / modified RMSc footprint. ~$100 cheaper than the 507K X2.

Plates that fit this pairing

C&H Precision Ruger RXM RMSc / Holosun K Adapter Plate$79.95

Compact multi-reticle optic for slim and subcompact pistols

Plates that fit this pairing

C&H Precision Ruger RXM RMSc / Holosun K Adapter Plate$79.95

Enclosed emitter compact optic for slim pistols

Plates that fit this pairing

C&H Precision Ruger RXM RMSc / Holosun K Adapter Plate$79.95

Full-size enclosed pistol optic on Holosun K-series footprint with included RMR adapter plate

Plates that fit this pairing

C&H Precision Ruger RXM RMSc / Holosun K Adapter Plate$79.95

Solar-charging enclosed micro red dot with multi-reticle system for slim carry pistols

Plates that fit this pairing

C&H Precision Ruger RXM RMSc / Holosun K Adapter Plate$79.95