RT-3 Prism Sight

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The RT-3 from Burris is a fixed 3x magnification red dot with a huge field of view! It’s small footprint and lightweight makes it handle like a dream.

MSRP: $455

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Compatible Reticles

Ballistic 3X™

Available On: RT-3
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Item Number
Reticle Color(s)
Combo Package
Clear Objective Lens Diameter
Field of View
Close Focus
Eye Relief
Click Value
Height Above Rail to Optic Centerline
Elevation Adjustment, Total Capability
Windage Adjustment
Illumination Control
Illumination Settings
Ballistic 3X
Ballistic 3X™
33.8 mm
2.6 in.
50 MOA
50 MOA
3.5 in.
8.8 oz.
RT Red Dot Sights
2020 Burris Optics Catalog
February 10, 2020
RT-3 Prism Sight is rated 3.8 out of 5 by 4.
Rated 5 out of 5 by from Great in every way. Exceptional sight by any standards. Clarity is top shelf. Ocular and objectives are nice and generous in diameter. The photo below doesn't do justice. The recticle may seem smaller at first, but a few minutes of acclimation solves that. But again, the clarity is tops. Reticle brightness in sunlight was usable, but the low settings are very well choosen for lower light conditions. Overall, the low weight, smaller form factor, excellent sight picture and price will hopefully make this RT3 a legend.
Date published: 2020-07-21
Rated 4 out of 5 by from Great idea, forward thinking instead of rehashing I have tried a couple things on my AR builds over the years. Decided to try the fad of LPVO's. While they have all been pretty good I just can't get over adding 14-20 oz of scope and another 3-6 oz with a mount. I tried various combos and got a LPVO setup down to low 20oz. That is still a lot of weight on top of a lightweight 16" AR. I have tried various Prism sights 3-4x, the weight being less, I found I actually preferred this set up. When I saw this announced at SHOT 2020, I was waiting for some initial reviews, nothing............. Then I caught a posting on AR15 forum where someone took the plunge and loved it, then another, all reporting good initial thoughts. So I snagged myself, I got to say that I am surprised this has not been tried before. This is absolutely PERFECT! A 3x prism sight the size of a common micro Red dot, a wide field of view, super lightweight, and great glass for the price range. The reticle while maybe a little smaller that I have used it other 3-4x scopes it was the same size as the Steiner I had tried. 5.56/7.62 BDC reticles don't always work as using different combos of ammo the BDC is useless, you got to learn what you shoot and how it is hitting at what ranges. I combined this 3x with fixed 45 degree sights, makes a perfect all around performer. I don't understand people expecting to take their 5.56 past 500 yds. At 3x this is perfect for hunting distance at 50-100 yds, or perfect for hitting a man sized target up to 400 yrds. BURRIS is the only one that has a 3x prism this size, weight and features. You need to get the word out BURRIS! My negatives which are not that negative, just little peeves. I have 3 things that would make this a 5 star product; 1.) make the reticle only light up the center dot and horseshoe, 2.) I hate buttons, give me a rotary dial, 3.) give me the ability to change mounts or do a quality QD mount instead.
Date published: 2020-07-08
Rated 2 out of 5 by from I really wanted to like this... I had high hopes for this optic and was very excited for it. But I've tried it out now and the problem is that it's just WAY TOO SHORT. I don't know why Burris thought absolute co-witness was the way to go with the RT-3, but that's what they chose. Burris, with everyone in the market going towards lower 1/3, and even 1.93 height mounts now it was a silly decision to make the RT-3 as short as you did. I needed this optic to clear my holosun laser which sits at the 12 o'clock position. Due to the low height my laser took up fully half my FOV and gave me glare issues. Also I'm six feet tall with a long neck and absolute co-witness mounts are not my go to. Sadly, I wouldn't recommend the RT-3 in this guise. If Burris was to address the mount then it would actually be killer!
Date published: 2021-01-14
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Since it states Prism, does that mean it’s a prism scope and not a true red dot? Does it have an adjustable diopter to adjust for vision differences and astigmatism?

Asked by: Skrapyone
I called Burris with this exact question and I was told it is a "prism" sight but does not have an etched reticle. Still looking for a real life review.
Answered by: DG93
Date published: 2021-01-19

Is this a red dot you can shoot with both eyes open? Or will the magnification affect ones ability to do so?

Asked by: Monty45
Yes, you can use this sight with both eyes open. It won’t have a continuous FOV like a 1x, but you can and should still shoot with both eyes open.
Answered by: DJ in KS
Date published: 2020-09-10

Can iron sights be used by aiming through the RT-1? And can the RT-1 be used in conjunction with a magnifier?

Asked by: BluNosDav
Hello, Yes to both questions! The RT-1 is compatible with the Burris AR-Tripler and you can use it to cowitness with iron sights.
Answered by: Burris Support
Date published: 2020-07-24

What is the eye relief?

Asked by: Steven44312
RT-3 2.6 Inches RT-1 Infinity
Answered by: JamesD
Date published: 2020-06-13

How much recoil will this optic take. I have an interesting build I'd like to try it on but have concerns that it's just not tough enough.

Asked by: Cooney460

What is the expected battery life? Is there an Auto shutoff function?

Asked by: SaltyDogMan
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