Triton Nautilus2 Micro Red Dot Sight for Pistol - RMSc 407K 507K Footprint - 3 MOA Red Dot Optic with Integrated Rear Sights - Shake Awake - 50000-Hour Battery - Triton

Triton Nautilus Micro Red Dot Sight

RMSc
$69.69
Sale price  $69.69 Regular price  $72.99
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Triton Nautilus2 Micro Red Dot Sight for Pistol - RMSc 407K 507K Footprint - 3 MOA Red Dot Optic with Integrated Rear Sights - Shake Awake - 50000-Hour Battery - Triton

Nautilus

3 MOA micro red dot with integrated rear backup sights on the RMSc variant only

$69.69
Sale price  $69.69 Regular price  $72.99
Shipping calculated at checkout.

43 reviews

SMALL OPTIC. EVERYDAY PRACTICALITY.
A compact, unmagnified red dot with motion activation and top-access battery replacement.

3 MOA dot · Shake Awake · Top-load battery

CHOOSE YOUR FOOTPRINT
Select RMSc or K-Series to match your exact slide or adapter plate. “Optics ready” alone does not confirm compatibility. Check bottom of page for specific makes and models.

Rear backup sights: Included on the RMSc variant only. The K-Series variant does not include rear backup sights.

Footprint
What is included?
  • Nautilus red dot sight
  • Adjustment tool
  • Battery removal tool
  • CR2016 battery
  • Cleaning cloth
  • Manual
  • Assorted mounting screws provided for customer convenience
  • Picatinny rail adapter
Will it fit my handgun?

Choose the Nautilus option that matches your slide or adapter plate: RMSc or K-Series. These options are not a universal-fit guarantee.

Confirm the exact model, generation, optic cut and hardware requirements. A model name by itself may cover several mounting configurations.

Ask Triton to confirm your fit

Which variant includes rear backup sights?

The RMSc variant only includes rear backup sights integrated into the optic housing. The K-Series variant does not include rear backup sights.

Whether the rear backup sights align with your front sight depends on front-sight height, slide geometry and any adapter plate. A specific co-witness height is not guaranteed across all setups.

How does battery replacement work?

Both the RMSc and K-Series versions use a CR2016 battery. The top-access compartment lets you replace the battery without removing the optic from its mount.

Follow the Nautilus manual and the polarity markings on your unit.

Lifetime warranty, shipping and returns

Nautilus is backed by Triton’s lifetime warranty.

See the current shipping policy and return terms for processing, delivery and eligibility details.

Specifications at a glance
  • Reticle: 3 MOA red dot
  • Magnification: 1x, unmagnified
  • Brightness: 10 settings
  • Activation: Shake Awake motion activation
  • Battery access: Top-loading
  • Listed runtime: Up to 50,000 hours; actual life varies with settings and use
  • Rear backup sights: Integrated into housing on the RMSc variant only
  • Footprint options: RMSc or K-Series
  • Housing: 6061-T6 aluminum

WHY NAUTILUS

Small footprint. Thoughtful details.

A clear aiming point, motion activation and a battery you can reach from above. Nautilus keeps the everyday essentials together in one compact optic.

TAKE A CLOSER LOOK

The details that make Nautilus.

Explore the sight picture, battery access and motion activation using the product’s own gallery images.

Gallery images illustrate product features. The dot shown is not a calibrated simulation of its apparent size.

3 MOA dot
A single red aiming point. The RMSc variant includes rear backup sights built into the housing; the K-Series variant does not. Front-sight alignment depends on your handgun and mounting setup.

BUY WITH CONFIDENCE

Start with the right fit.

A quick compatibility check helps you choose the right Nautilus before ordering.

01

Your platform

Identify your handgun’s exact model and generation, including any aftermarket slide.

02

Your optic cut

Check the mounting specification in the slide or adapter-plate documentation.

03

Your option

Choose the matching RMSc or K-Series option above. Confirm any plate and hardware requirements.

04

Your support

Unsure about compatibility? Send Triton your exact setup before you order.

QUESTIONS BEFORE YOU BUY

Nautilus, clearly explained.

Are RMSc and K-Series the same?

Although they share most dimensions, they are not exactly the same. The RMSc footprint will fit both the RMSc and K-series but not the other way around. This is because K-series red dots do not have lugs at the rear of of the sight while the RMSc does. Similar-looking optic cuts can differ, so do not rely on the handgun name alone.

Will I need an adapter plate?

That depends on your slide’s optic cut and the Nautilus option you choose. Check the slide or plate manufacturer’s specifications, or ask Triton to confirm your combination.

What does the 3 MOA specification mean?

3 MOA describes the dot’s angular size. Nautilus uses a single red aiming point with 10 brightness settings. Gallery illustrations are not calibrated representations of how large the dot will appear to your eye.

Do I have to remove the optic to change the battery?

No. The current Nautilus design uses top-access battery replacement, so you can reach the battery compartment while the optic remains mounted. Follow the model-specific battery instructions.

How does Shake Awake affect battery life?

Shake Awake activates illumination when the optic moves and puts it to sleep when idle. Triton lists up to 50,000 hours of battery life; brightness, movement, temperature and battery condition affect actual runtime.

Will the RMSc rear backup sights line up with my front sight?

Rear backup sights are included on the RMSc variant only. Alignment depends on the front-sight height, the slide and any adapter plate. A specific co-witness height is not guaranteed across all setups. The K-Series variant does not include rear backup sights.

Where can I find the manual and warranty support?

Download the Nautilus owner's manual using the download button on this page. For additional help, contact support. Nautilus is backed by Triton’s lifetime warranty.

Nautilus guides and support

FROM DETAILS TO DEMONSTRATION

See Nautilus in action.

A dedicated space for product walkthroughs and owner perspectives.

Affordable Micro Red Dot That Works

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Budget 9mm Pistol Build

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Is Only $70

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Find your handgun.

Browse the make and model lists by Nautilus SKU.

RMSc footprint handguns

RD-NAU-RS-2

Archon Firearms

Type B OR/OSR / Type D OR/OSR

Avidity Arms

PD10

Bersa

BP9CC OR

Canik

Mete MC9 / Mete SF / Mete SFT / Mete SFT Pro / Mete SFX

FN America

Reflex MRD

Glock

43X MOS / 48 MOS

Girsan

Witness 2311

IWI US

Masada Slim

Kimber

R7 Mako OR / R7 Mako TFS / R7 Mako Carbon Compact / CDS9 / KDS9c

Langdon Tactical

Beretta Tomcat RDO

Mossberg

MC2sc Optic Ready

Palmetto State Armory

5.7 Rock Optics Ready / Dagger Micro

Rock Island Armory

STK100

Ruger

MAX-9 / 5.7 Optics Ready

SAR USA

SAR9 Subcompact Gen2 / SAR9 Compact Gen3 / SAR9 Gen3 / SAR9 Sport Gen3 / SAR9 SOCOM

SCCY

CPX-1 RDR / CPX-2 RDR / CPX-3 RDR / CPX-4 RDR / DVG-1 RDR

Shadow Systems

CR920 Combat / Elite /CR920P

SIG Sauer

P322 / Comp / P365-380 / P365 Optic Ready / P365X / P365XL / P365-XMACRO / Comp / P365-AXG Legion

Smith & Wesson

M&P 22 Magnum Performance Center / M&P Shield M2.0 OR / M&P Shield Plus OR / Equalizer

Springfield Armory

Hellcat OSP / Hellcat RDP / Hellcat Pro / XD-S Mod.2 OSP

Stoeger

STR-9MC

Taurus

TX 22 Compact / GX4 TORO / GX4XL / GX4 Carry TORO / Defender 856 TORO / 327 TORO / 605 TORO / Judge TORO / Magnum Judge TORO

Tisas USA

Carry Double Stack / Duty Double Stack / Night Stalker / Double Stack SF

K-Series footprint handguns

RD-NAU-RS

FN America

Reflex MRD / Reflex XL MRD

Glock

43X MOS-K

HK

CC9 Optics Ready / CC9 Optics Equipped

IWI US

Masada Slim / Masada Slim Elite / Masada Slim Commander Elite

Kimber

R7 Mako Tactical

Palmetto State Armory

Dagger Micro / Dagger Micro C-1 / Dagger Micro X-1

Ruger

MAX-9 Optics Ready

Shadow Systems

CR920 / CR920 Elite / CR920P / CR920X / CR920XP

SIG Sauer

P365-380 Optics Ready / P365 Optics Ready / P365X / P365XL / P365-XMACRO / P365-XMACRO Comp / P365 FUSE / P365 AXG Legion

Smith & Wesson

M&P Shield X / Performance Center Shield X Carry Comp / CSX E-Series 3.1" / CSX E-Series 3.6"

Taurus

TX22 Compact

Match the exact optic-ready version and confirm your slide or adapter plate before choosing a footprint.

  • 5 stars: 40 (93%)
  • 4 stars: 3 (7%)
  • 3 stars: 0 (0%)
  • 2 stars: 0 (0%)
  • 1 star: 0 (0%)
J
Joe
Compact, Durable, and Feature‑Packed Micro Red Dot

I recently installed the Triton Nautilus2 3 MOA Red Dot Reflex MRDS on my Canik Mete MC9 Prime, and the fit and performance have been excellent. Because the optic uses a true RMSc footprint and is also compatible with 407K and 507K patterns, it mounted directly to the slide without any adapter plates. Installation was quick and simple, and the optic sits low and secure with no movement under recoil.One feature I really like is the integrated rear backup sights that are milled directly into the optic housing. This makes co‑witnessing very natural and helps with faster target reacquisition if needed. It’s a smart design that keeps the setup clean without adding extra components.The 3 MOA red dot is crisp and easy to pick up. It provides a great balance between precision and speed, making it suitable for defensive shooting, range training, or competition. The optic is also parallax‑free, which helps keep shots consistent even if the dot isn’t perfectly centered.Build quality feels very solid. The optic is CNC‑machined from 6061‑T6 aircraft‑grade aluminum, which keeps it lightweight but still durable and resistant to impacts. The multi‑coated lens provides a clear sight picture and helps reduce glare while maintaining visibility in bright sunlight, low light, or light rain.I also appreciate the Shake Awake feature, which automatically activates the optic when movement is detected. Combined with the 50,000‑hour battery life, it’s a very convenient system that helps conserve power and keeps the optic ready whenever the pistol is picked up.Overall, the Triton Nautilus2 3 MOA Red Dot Reflex MRDS pairs perfectly with my Canik Mete MC9 Prime. It offers great clarity, durable construction, and smart features, and considering the quality and performance, it also delivers excellent value for money compared to many much more expensive pistol optics.

B
Brock McKenna
Small but powerful inside

Much smaller than I'd expected when I opened the box, but not a bad thing, quite the opposite. Both the mount and the housing itself are very well made, and come shipped with all the necessary hardware for mounting. The red dot has a very large range of brightness intensity, and is very easy to adjust on the fly with the 2 side mounted buttons. Not sure how long the battery will last but with so many different light levels it's probably heavily dependent on the user. Overall great little reflex sight, and a good price to match VS name brand optics.

S
Skyler and Jenny
Sleek and bright

Love this thing. Comes with a picatinny mount also so using with rifles or carbine. This is nice and compact and well made. Very solid build quality.Easy to adjust and the red dot is bright even in the day. This IS a shake awake sight. Best feature in years for optics I swear.Comes with tons of screws for mounting on various set ups.Works awesome and is easy to set up and use.

M
Martin Olson
Good to go as an offset backup

Sleek little micro dot. I was a little annoyed at first because I thought the tiny philips screws at the bottom were for the battery compartment. I hate bottom mounted batteries. But thankfully it's at the top, between the glass and emitter. The bottom screws are therefore for the electronics package.That said, even though I found the real compartment quickly, this does highlight a complaint of mine: the manual is lacking. It's just a tiny strip of paper that doesn't tell you much about the sight. Sure, the controls are simple and mostly intuitive, but only "mostly". I have a lot of pistol dots and they were either bottom mounted battery (yuck), or side trays. That's why I didn't think to look at the top first. I would also like to know more information that would be on a bigger manual, like battery life considerations.Other than that, this is basic and minimal, and therefore good enough because of the price point.The side to side parallax isn't bad. The up and down parallax is noticeable, but most other sights are like that. The build quality and materials are decent, and I haven't scratched it yet just by installing it. Window size is on the smaller side, but usable. The glass is clear. The dot itself is a little big (3 MOA) so it still looks circular and doesn't turn into a starburst with my astigmatism. The range of brightness is only okay. I couldn't dim it as much as I wanted, but it's more than bright enough on the other end.This has shake awake, which works. But the most important part to me is that you can actually turn it off. It will get jostled in storage, so I don't want unnecessary battery drain. I have a different offset dot with shake awake that drained itself ahead of schedule because I couldn't truly turn it off. This one does, so that gives me a sigh of relief.Instead of a pistol, I'm putting this on a rifle scope as a backup on a top offset mount. The 1913 mount it comes with is a little bulky. I should probably get a dedicated scope ring RMSc mount instead of using my normal scope ring 1913 rail mount because the compounded bulk is a bit ridiculous.I wouldn't prefer this for duty or EDC on my pistols, but nothing so far has made me think it would be bad at that. For now this is decent as an offset backup for high magnification rifle scope. Value pistol dots usually fail at the electronic package protection, but as an offset backup on a scope, this won't get hit with nearly the same amount of shock compared to being mounted on a reciprocating slide.

C
CMDiazJr
A very solid and fairly bright red dot sight.

A very solidly made, compact Red Dot sight, with optional picatinny mount...This is a nice looking red dot sight. It has an extra thick shroud, that looks ruggedly built. The glass in the front is coated, so that should keep glare and reflections down.The red dot is fairly bright in full sunlight. It's only a single dot, which is not my favorite. I prefer a circle dot, or something similar. It has about 10 brightness settings from very dim to very bright. I don't believe it has a night vision setting.The picatinny mount is noticeably wider than the red dot sight. But that is because the sight is fairly small. The sight has shake awake, which is an added bonus. That way your battery doesn't run out and is always ready to go when you need it.I tried to get pictures of the actual illuminated red dot, but it's exceptionally hard to take pictures of it. The camera will not focus on it properly.Overall, this is a real solid red dot sight.Five stars out of five.

J
Justin Bradley

Fits on my Canik prime nice love the price and the fit great product.

K
Kswapian
Tx22 loves it

TX22 bolted directly

B
Benny Ortega
Works great on my 43x.

Works great on my 43x.

r
rick
So far I like it

If it holds zero it’s gotta be by far the best cheaper red dot on the market! I’ll update when I find out

H
Hayden
Good customer support

Had problems with my first one, arrived with dead battery and upon replacing i couldnt get the battery cap to go back on. Great customer support, very helpful, sent me a whole new unit right away. Great optic, looks good, light, and half the price of comparable red dots.

S
Spaz83
Great sight for the price!

Great red dot would highly recommend. Fit great on my ruger max 9! Came with all different size screws to make installation a breeze! Will be buying another one for my glock 43.

t
tonya burke
Good Quality good customer service easy to zero

Took me a minute to sight it in but worked good. Got knocked around in my car and the zero wouldn’t hold. Not sure too many would.Contacted customer service explained what happened and they are sending me a new red dot. Not sure why people are complaining about them they are doing right by me. Customer service is great!Hopefully I can keep this one a little safer.Zeroing this one should be easier now that I know what I’m doing!

C
Charles jones
Easy to zero in

Perfect fit for a canik mete sf.

J
Jd
Would recommend buying a torque screwdriver to mount properly

Easy installation and battery replacement also small size and good retention haven’t had to rezero and excellent for the price

D
Dottie n David
Triton Nautilus2 Micro Red Dot Sight for Pistol - RMSc 407K

Triton Nautilus2 Micro Red Dot Sight for Pistol - RMSc 407K. Appears to be of good quality for the money. Nice red dot, good visibility, easy direct mounting to a PSA Micro Dagger, 120 rounds down range and so far it is holding a nice zero without variation. Wish it came in a RMR footprint for my compact RMR dagger.

D
Dave
Good value

Great value for the money. This is a VERY simple micro optic. No frills it just works. It's easy to zero and has a sealed baseplate with top change battery. Fits well on my S&W M&P 2.0 22 magnum. Does not interfere with function like some larger, heavier optics. I can't comment on durability yet as I just got it, threw it on and sent 250 rounds downrange. It did hold zero though.

T
Tandricus
You won't be disappointed with this one

I have learned that this company Maja very good products. After my scope I realize these Are the best to get without having to spend a few hundred dollars on one. You won't be disappointed

Z
Zumbateach
Great sight

Awesome deal I love it

a
akonius
Great optic!

I got this optic as I really wanted the shake awake feature - it works REALLY well. Basically, by the time you pick it up, the dot is already on and active...no need to mess around with turning anything on. It also goes to sleep on it's own. The fit and mounting were spot on with no issues and alignment was perfect. So far, it has held zero really well and I haven't had to make many adjustments after several rounds. Of course - the most important item is how does it look? Cool - that's how! Great optic - glad I picked it up.

J
John Salisbury
Great dot for the money, accessories make for an easy intall.

This is the second one I purchased. Love the look, feel, and construction. The accessories make it easy to install on any footprint. I have been using my other for a year now with great results. The first version does not appear to shake awake, but the battery life has been great.

K
Kevin K Ashe
The best pistol optic I have owned

The best pistol optic I have owned. Love it! All the features of the high cost ones with same quality! No malfunction keeps position.

M
Madbrewer
Great budget sight.

Came with a ton of different length screws, so mounting was easy. all of the plates and adapters fit perfectly. Dialing it in and targeting was also easy. This was so lightweight it did not interfere being slide mounted on a low caliber .22. Dot is very clear and visible even in bright sun.

J
James
Nice Optic

Fits very well. Holds zero. Shake awake. Make sure to put some blue Loctite on the base.

J
Josh H.
Excellent quality for ANY price.

Quality is excellent. Triton is punching WAY above their weight class with the Nautilus. Quality felt better than a brand new holosun out of the box, for less than half of the price. I’ll be coming back for more when the RMR size is back in stock.

D
Darryl R. Samuel
Great item

A great item at a great price

M
Mr. SquishyPants
Extremely Excellent !

Extremely Excellent !Installed on the Mossberg 590S - { Optic Ready, SKU# 51604 }

Goes well with...