Open image in slideshow, Mk3 Tritium Sight Plate System
See All Sights

Mk3 Pistol Sight

$199.95 $0.00

Shipping calculated at checkout.


Must Have RMR Optics Plate System! 

MK3 Sight Using RMR Plate System

Our new Mk3 Sight is a great option for a pistol sight! Unlike other manufactures we leave the batteries out of our products, and still offer the best lighting on the market! See your sight picture perfectly with a full body of edge glow to gather light, and our patented tritium placement directly behind the reticle for dust/dark situations. 

Features 

  • Dual Illumination

  • Smallest profile in its class

  • Quick sight acquisition 

  • Pin point accuracy

  • 150 inches of windage, and elevation adjustment

  • Parallax free sighting system

  • Simple installation

  • Lifetime warranty 

Mk3 Mounting Options

The Mk3 Tritium Lit Sight mounts using the most widely used pistol optic plate The RMR Cut. Place the sight onto the RMR optics plate cut, insert the two screws on either side, tighten them down with the provided allen key, and you are ready to go! Yes it can be mounted in the time it took you to read the steps! Also we bore sight the sights before they are packaged, so you will only have to make small adjustments. Does NOT work on the new RMRcc Cut. 

Dual Illumination 

What is dual illumination? Dual Illumination is when you have two sources of light in a single sight. Our Mk3 Tritium Lit Sight has been redesigned to have the most edge glow light gathering material we have ever offered. This edge glow will take light from all directions, and transmit that light to your reticles edge. This new design works so well that if you have any light (even a full moon) hitting the sight you will be able to see the reticle. The second part of that dual illumination is our patented tritium placement. We have a vile of tritium directly behind the reticle that will give you the same bright sight picture as you had during the day! A true battery free 24 hour sight!!

SeeAll VS Micro Red-Dot

Why buy a SeeAll Over a red dot? Well there are a lot of reasons, and here are a few of them! 

Our Sight weighs under 1 ounce, red dots weigh over a ounce

Our Sight has no electronics, or batteries. Red dot sights have these unreliable parts. 

Our Sight is constructed out of anodized aluminum, and acrylic ready for anything you might put it through. Red dots are made out of plastic. 

This Mk3 Pistol Sight is the smallest sight in its class only measuring 1 inch wide, 1.8 inches long, and only .58 inches tall. Usually closer to .48 tall when you mount the sight into an optics cut!

Our Sight is fully adjustable, and unlike a red dot you can aim off the point of the delta. Rather than covering your point of impact with a big red dot. 

 

Our Sight has a built in racking point making a quick, and easy experience when using it for speed, or simple plinking. 

Finally Oversight Shooting offers a lifetime warranty on our products, because they are built to work, last, and perform! 

Construction 

Body is constructed of a CNC cut 6061 aluminum that has been anodized

Guts, and optic are acrylic for the best lighting, and durability 

100% Made In The USA!

Comes with an allen key, and two mounting screws

Specs. 

  • 1 inch wide

  • 1.8 inches long

  • .58 inches tall

  • Weight .8 ounces

  • Tritium Life 15-20 Years

  • Comes with two screws, and an allen key

  • Works on anything with the Trijicon RMR optics plate

Plate Adapter Links

Mk3 will mount onto the same plate as the standard RMR Red Dot Sight. Any system that says it is compatible with the RMR sights will also be compatible with the SeeAll Mk3 Sight

Outerimpact Optics Adapters 




Open image in slideshow, Mk3 Tritium Sight Plate System
Open image in slideshow, Mk3 Tritium Sight Plate System
Open image in slideshow, Mk3 Tritium Sight Plate System
Open image in slideshow, Mk3 Tritium Sight Plate System
Open image in slideshow, Mk3 Tritium Sight Plate System
Open image in slideshow, Mk3 Tritium Sight Plate System
Open image in slideshow, Mk3 Tritium Sight Plate System

Customer Reviews

Based on 118 reviews
72%
(85)
14%
(17)
9%
(11)
1%
(1)
3%
(4)
S
Shooter McGavin
My 3rd See All

This is my third See All Open Sight that I have purchased. I own the MK1, MK2 (Crosshair reticle) and now the MK3. Right out of the box it is pretty much dead on, and I'm using a PSA 5.7 Compact. Not sure how they performed this magic but its awesome. Needs to go a half inch or so to the right, and I don't have a bore sight, so I will mess with the windage when I'm more sure I won't royally screw it up lol. The MK2 with the crosshair reticle is cool as well, but with my eyes its a little hard to pick up. With the MK3 however, the Delta with tritium backing is where its at! It's easy to pick up and the big ole chonking triangle helps tremendously. Give the target just the tip (hubba hubba) and you're good to go. I wish there was a cover, or some sort of clear shell to put over it, but I can see how that wouldn't help with allowing the tritium to soak up those glorious photons. Also, it would be nice to have a little metal strip at the base of the sight, on the front, to assist with racking on hard surfaces, but that may just be me. Anyway, a great sight, cool idea, great presentation, now just make it for the RMSC footprint so I can get that one too.

k
kenneth patton
What's not to like ?

No batteries, no bright sun washout. I compete weekly using a red dot so a different sight picture certainly had a learning curve. But it was a very short one. I mounted the Mk3 directly on a Ruger RXM. No plates or adapters necessary. Literally, three shots from the bench had us on target. Myself and another shooter took turns engaging various targets from 7 to 25 yds. And the hits came easy. This sight is easy to pick up with the eye, highly versatile and quite robust.

W
William Johnson
Very disappointing company

I never received the product. USPS said I had to go through the sender to fill a search on the package. I tried contacting SeeAll Sights three times, once by phone and twice by email, and got zero response. Totally ghosted the sell….

William, We have sent you emails attempting to find out what is going on. We are more than happy to provide you tracking. On our end shows it was delivered 12:04 pm on May 27, 2025. Please call us because we have no emails from you and no missed calls. You did not provide a phone number on your order so Our number is 208-984-4721

M
Mathew Songster
Great sight picture

In combination of the low profile mounting base and slim magnified lens gives a great sight picture for easy target acquisition

k
kim dongkyun
great sight ever

The material is very solid, and the field of view obtained is clear. highly recommend.

123

Customer Reviews

Based on 118 reviews
72%
(85)
14%
(17)
9%
(11)
1%
(1)
3%
(4)
S
Shooter McGavin
My 3rd See All

This is my third See All Open Sight that I have purchased. I own the MK1, MK2 (Crosshair reticle) and now the MK3. Right out of the box it is pretty much dead on, and I'm using a PSA 5.7 Compact. Not sure how they performed this magic but its awesome. Needs to go a half inch or so to the right, and I don't have a bore sight, so I will mess with the windage when I'm more sure I won't royally screw it up lol. The MK2 with the crosshair reticle is cool as well, but with my eyes its a little hard to pick up. With the MK3 however, the Delta with tritium backing is where its at! It's easy to pick up and the big ole chonking triangle helps tremendously. Give the target just the tip (hubba hubba) and you're good to go. I wish there was a cover, or some sort of clear shell to put over it, but I can see how that wouldn't help with allowing the tritium to soak up those glorious photons. Also, it would be nice to have a little metal strip at the base of the sight, on the front, to assist with racking on hard surfaces, but that may just be me. Anyway, a great sight, cool idea, great presentation, now just make it for the RMSC footprint so I can get that one too.

k
kenneth patton
What's not to like ?

No batteries, no bright sun washout. I compete weekly using a red dot so a different sight picture certainly had a learning curve. But it was a very short one. I mounted the Mk3 directly on a Ruger RXM. No plates or adapters necessary. Literally, three shots from the bench had us on target. Myself and another shooter took turns engaging various targets from 7 to 25 yds. And the hits came easy. This sight is easy to pick up with the eye, highly versatile and quite robust.

W
William Johnson
Very disappointing company

I never received the product. USPS said I had to go through the sender to fill a search on the package. I tried contacting SeeAll Sights three times, once by phone and twice by email, and got zero response. Totally ghosted the sell….

William, We have sent you emails attempting to find out what is going on. We are more than happy to provide you tracking. On our end shows it was delivered 12:04 pm on May 27, 2025. Please call us because we have no emails from you and no missed calls. You did not provide a phone number on your order so Our number is 208-984-4721

M
Mathew Songster
Great sight picture

In combination of the low profile mounting base and slim magnified lens gives a great sight picture for easy target acquisition

k
kim dongkyun
great sight ever

The material is very solid, and the field of view obtained is clear. highly recommend.

123