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Swampfox SENTINEL II 1x20mm Dot Sight Red 3 MOA RMSc Footprint


Crafted for precision and built to stand guard, Sentinel II showcases a fusion of advanced features in a sleek, cohesive design. Designed for concealed carry, this micro pistol dot sight maintains the standardized RMSc footprint and its familiar slimline profile while maximizing visibility with a larger 20mm window. Its most unique feature is the patented removable rear sight guide installed in front of the window. This guide provides backup support for micro pistols that sacrifice their rear iron sights for dot sight compatibility. Sentinel II displays a 3 MOA dot in either red or green illumination and is equipped with Swampfox’s Shake N’ Wake auto on/off feature for grab-and-go readiness.

In stock

SKU: SNL2120-RMS Category:



Sentinel II is a rugged micro dot sight designed for everyday carry. Combining manufacturing experience and consumer feedback, we’ve made great improvements to design an optimized compact optic solution. The RMSc footprint provides compatibility for most optics-ready slimline pistols while its recessed hood design and shielding lens coatings protect its larger viewing window. Sentinel II stands as the latest advancement in Swampfox micro red dots.

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Despite its slim RMSc mounting footprint, Sentinel II maximizes visibility for quick target acquisition with a new 20mm objective window – an improvement over the 16mm lens of the first generation optic. Fully multi-coated to resist scratches, fog, and water, and protected from glare by rear hood serrations, experience improved clarity no matter the shooting conditions.


Sentinel II is uniquely equipped with patented removable rear sight guides from Night Fision. Installed forward of the optic window with titanium screws, the hardened steel and black nitrided precision guides not only act as an alignment tool but also as a distinct landmark for those familiar with traditional iron sights. For shooters desiring more, pair the guides with a matching height yellow jacket tritium front sight, coming soon for Glock, SIG Sauer, and Smith & Wesson M&P Shield subcompact handguns.

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Featuring a crisp 3 MOA dot in either red or green and 10 manual illumination settings, Sentinel II stays at the ready longer with a bottom-mounted CR2032 battery and Shake N’ Wake auto on/off. Brightness settings 1 and 2 are night vision-compatible with settings 3 to 8 for low-light and indoor applications, leaving settings 9 and 10 ideal for daylight shooting.


Sentinel II provides 80 MOA of adjustment range for both windage and elevation. With adjustments of 1 MOA per click, users are well equipped to fine-tune their aim for targeting at any range. With tactile click adjustments, the zeroing process is easier even when wearing hearing protection.

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Image description for Built for the Fight

Manufactured from tough 7075-T6 aluminum, Sentinel II offers improved durability over its previous generation. A new body design better protects the LED emitter from the elements and provides enhanced protection for its recessed lens against surface racking. Armed with robust design features and optional add-on Ironsides Shield, Sentinel II is capable of withstanding everyday use and abuse.


All Swampfox optics come with a Limited Lifetime Warranty, providing protection against manufacturing and material defects. We offer a 10-year coverage on the LED, with lifetime coverage on all other components. If the product encounters any performance-compromising damage, we are committed to repairing or replacing it. This warranty does not extend to intentional or cosmetic damage, or to lost or stolen optics.

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MOA adjustment 1 MOA per click
Dot size 3 MOA
Magnification 1x
Lens diameter 20mm
Illumination positions 10
Brightness adjustments Up/down digital press
Shockproof G Forces 1500 G Force
Waterproof IPX7
Battery type CR2032
Max battery life Up to 50,000
Dimensions 1.84”(L) x 1.07”(W) x 1.07”(H)
Weight 0.99 oz
Lens Multi-Coated Ruby red – Red Dot
Multi-Coated Silver – Green Dot
Specialty coatings Anti-fog, hydrophobic, anti-scratch
Parallax Parallax free at 33 yds
Eye relief Unlimited
Mount type RMSc
Optic body 7075-T6
Windage adjustment range +/- 40 MOA / 80 Total MOA
Elevation adjustment range +/- 40 MOA / 80 Total MOA


Sentinel II
slotted head wrench
Allen Wrench
S-Wing wrench
Rubber cover
CR2032 Battery
4x M3x0.5 (EL = 12 mm)(SIG P365)
4x #6-32×0.472″ (EL = 12 mm)(M&P Shield)
4x M4x0.7 (EL = 11 mm) (Springfield Hellcat / Glock 43X/48 MOS)
4x M4x0.7 (EL = 12 mm) (Canik)
2x M2 (EL = 3mm) (For Iron Sight)
2x PVC 0.3mm Waterproof Plate
Black lens cloth
Iron Sight (Made in USA)