Swampfox RMR Footprint Optics

Widely considered the industry mounting standard for double stack optic-ready handguns, the Trijicon-designed RMR footprint is currently used by over 40 red dots from nearly 20 manufacturers – including Swampfox. Offering a secure connection and cross-platform versatility, the RMR is our chosen footprint for full-size pistol dot sights.

Swampfox currently offers three RMR footprint optics, as well as multiple RMR footprint mounts to accommodate primary and secondary red dot shooting.

Swampfox Liberty II

Maintaining an RMR footprint, the second-generation Swampfox Liberty II is an all-purpose red dot sight ready for inside and outside the waistband carry or offset use.

Optimizing form and function, Liberty II sports a compact body despite an enlarged 24mm wide window and enhanced hood reinforcement. Shooters have the choice of a standard 3 MOA red or green dot or a new, 4-in-1 red multi-reticle with a single 3 MOA center dot, open circle, crosshairs, and combined reticle. A top load CR1632 battery and Swampfox Shake N’ Wake auto on/off technology provide up to 50,000 hours of run time for everyday carry and beyond.

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Swampfox Justice II

Built with an RMR footprint for ultimate mounting versatility across competition handguns, AR15 platforms, sporting shotguns, and pistol caliber carbines, Swampfox Justice II was engineered to win.

Featuring our largest dot sight window yet, its massive 30mm corner-to-corner lens is recessed and reinforced for protection against shooting barriers and challenges of competition. Available with the choice of a 6 MOA red/green dot or a new red multi-reticle with ten manual brightness settings and Shake N’ Wake, Justice II is currently the largest window dot sight on the market offered with green illumination and a multi-reticle.

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Swampfox Kraken

Though designed with a proprietary footprint, Swampfox Kraken ships with an RMR adapter plate that interfaces with side-mounted torque screws for a secure connection. The optic and plate can then be mounted to any standard RMR footprint slide, riser, or offset.

Combined with durable 7075 aluminum construction and an independent inner tube, Kraken is a rugged multi-platform enclosed dot sight. A 16mm square window provides ample visibility of a 3 MOA red or green dot with ten manual brightness settings for shooting in any light condition, while Shake N’ Wake ensures anytime readiness and extends runtime of a CR2032 battery.

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Legacy Series

Founded in 2018, various Swampfox optics have since been retired to our Legacy Series. No longer in production or enhanced with second-generation models, these optics can still be purchased from us and/or other online dealers.

Swampfox Kingslayer

Our first pistol dot sight, Swampfox Kingslayer is a compact reflex sight with RMR footprint and 22mm window. Available with a 3 MOA red dot or red/green circle dot and ten manual brightness settings, its wide window and included low-profile Picatinny mount allow for rapid target acquisition atop full-size handguns and field shotguns for competition and hunting use.

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Swampfox Liberty / Justice (Gen 1)

Slimmed down versions of Kingslayer, first-generation Swampfox Liberty and Justice offer everyday carry and competition versatility with RMR footprints and 22mm and 27mm windows, respectively. Both dot sights are available with red/green 3 MOA dots, ten manual brightness settings, and Shake N’ Wake auto on/off technology in 7075 aluminum constructions.

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In addition to optics, Swampfox also manufacturers optic mounts with RMR footprint adapters to elevate or offset red dots for multi-platform shooting. Mounts are outfitted with standard RMR footprints to fit Swampfox optics and others.

Dot Sight Mounts

While primarily used on handguns, red dots can also be mounted to large platform firearms, like AR and AK-style rifles and pistols, PCCs, and modified shotguns. To accommodate these gun owners, Swampfox offers a direct Picatinny Mount and adjustable 1.6" lower third cowitness/1.4" absolute cowitness Rebel Riser with RMR footprints that interface with standard Picatinny rails.

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Riflescope Offset Mounts

When not used as a primary optic, dot sights can also pair with LPVOs and medium power variable optics (MPVOs) for rapid close-quarters engagements at true 1x magnification. Swampfox Hostile Engagement Rings and cantilever mounts maximize receiver real estate with four, integrated 45-degree RMR footprint ring mounts for left and right offsetting, while our reversible 45-degree Rebel Offset attaches to Picatinny receivers for low-profile mounting RMR footprint red dots forward or behind your scope.

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What is the RMR footprint?

The RMR footprint is the mounting pattern Trijicon designed for its Ruggedized Miniature Reflex sight back in 2009. It uses two screw holes toward the rear of the optic and two sockets at the front that seat onto locating pins, with the front sockets spaced about 0.9 inches (22.5mm) apart. Those front pins are what set the RMR apart from screw-only patterns, since they absorb recoil and take stress off the mounting screws. Because so many shooters adopted the RMR, its pattern became the de facto standard for full-size and compact optic-ready pistols, and it is now shared by red dots from nearly 20 manufacturers.

Which red dots use the RMR footprint?

A lot of them. The RMR footprint is the most widely supported pattern on the market for full-size and compact pistols. Optics that share it include the Trijicon RMR, RMR HD, and SRO, the Holosun 407C, 507C, 508T, and 507 Comp, the SIG Sauer Romeo Zero-R, the Riton X3 Tactix PRD, and all three Swampfox options: Liberty II, Justice II, and Kraken. A few optics with proprietary footprints, like the Holosun 509T and the Swampfox Kraken, ship with an RMR adapter plate so they still mount to any RMR-cut slide or mount. One common point of confusion: the Vortex Venom and Viper do not use the RMR footprint. They use the Docter pattern, so confirm your footprint before buying a plate.

What is the difference between the RMR, RMRcc, and RMSc footprints?

These three get mixed up constantly because the names look alike, but they are not interchangeable. The RMR is the full-size standard, with two front recoil pins and two rear screws, built for full-size and compact slides. The RMRcc is Trijicon's smaller concealed-carry pattern, made for slim and micro-compact pistols, and it is narrower than the RMR. An RMR optic will not fit an RMRcc cut, and the reverse is also true. The RMSc, originally a Shield design, is the other common micro footprint and uses two screws with no recoil pins, showing up on a lot of single-stack and micro-compact slides. The short version: match the footprint milled into your slide to the footprint on your optic, and never assume a smaller carry optic shares the full-size RMR pattern.

What is an RMR-cut slide, and do I need an adapter plate?

An RMR cut is a slide milled to accept an RMR footprint optic directly, with no plate required. If your slide is cut for the RMR, a Liberty II or Justice II bolts straight on. Optic-ready pistols that use a plate system instead will need the correct RMR plate to convert that cut to the RMR pattern. The Kraken is a slightly different case: it uses a proprietary footprint but ships with an RMR adapter plate, so it mounts to any standard RMR-cut slide, riser, or offset once the plate is installed.

Can you mount an RMR footprint red dot on a rifle or shotgun?

Yes. While the RMR footprint started on handguns, it works just as well on rifles, AR and AK-platform pistols, PCCs, and shotguns when paired with the right mount. Swampfox builds a direct Picatinny Mount and an adjustable Rebel Riser with RMR footprints for primary use, plus Hostile Engagement Rings, a Hostile Engagement cantilever mount, and the reversible Rebel Offset for running a dot at 45 degrees alongside an LPVO. All of them carry a standard RMR footprint, so any RMR-pattern dot drops right in.

What is the best RMR footprint red dot?

The right one depends on the gun and the job. For everyday carry and a clean, compact profile, the Liberty II gives you a 24mm window with a red or green dot or a four-in-one multi-reticle. For competition and large-platform use where you want the biggest possible sight picture, the Justice II runs a 30mm corner-to-corner window and is the largest-window dot sight on the market offered with green illumination and a multi-reticle. If you want an enclosed emitter that shrugs off mud, lint, and debris, the Kraken is the rugged choice and still mounts to any RMR cut with its included plate. All three share the RMR footprint, so any of them fits your existing setup.

Are enclosed red dots available with an RMR footprint?

Yes. If you want a sealed optic that keeps debris off the emitter, the Swampfox Kraken is an enclosed dot sight that mounts to the RMR footprint by way of its included RMR adapter plate. You get the durability of an enclosed design with the cross-platform flexibility of the most common pistol footprint on the market.