Viper Red Dot

Viper® Red Dot

Viper Red Dot is rated 4.3 out of 5 by 66.
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MSRP $329.99


The Viper red dot’s super low mounting height makes it the perfect solution for handguns with cutout slides. Offers the simplicity and speed advantage of a red dot, while co-witnessing with suppressor-height iron sights.

Viper Red Dot Dimensions

Included in the Box
  • Weaver / Picatinny mount
  • T-10 Torx wrench
  • CR 2032 battery
  • Lens cloth
  • Flathead wrench
  • Protective cover

Center of the riflescope tube from the top surface of the mount base.

Mount Type Weaver/Picatinny
Magnification 1x
Dot Color Bright Red
Dot Size 6 MOA
Eye Relief Unlimited
Adjustment Graduation 1 MOA
Max Elevation Adjustment 120 MOA
Max Windage Adjustment 120 MOA
Parallax Setting Parallax Free
Length 1.8 inches
Weight 1.03 oz
Product Manual (PDF) Download
Product Manual 2 (PDF) Download




Fully Multi-Coated Increase light transmission with multiple anti-reflective coatings on all air-to-glass surfaces.
Unlimited Eye Relief Non-critical eye relief for rapid target acquisition
Parallax Free All red dot and holographic sights will exhibit some small amount of parallax. Matching current industry practice, this small amount would be considered "parallax free" and will make a negligible difference in performance.


Single-Piece Chassis Compact and lightweight.
Waterproof O-ring seals prevent moisture, dust and debris from penetrating the binocular for reliable performance in all environments.
Shockproof Rugged construction withstands recoil and impact.
Hard Anodized Finish Highly durable hard-coat anodization provides a low-glare matte surface and helps camouflage the shooter's position.
ArmorTek ® Ultra-hard, scratch-resistant coating protects exterior lenses from scratches, oil and dirt.



The daylight bright red dot is easy to see and paints targets regardless of lighting conditions or background.

Subtension detail for Viper 6 MOA red dot.



Rated 3 out of 5 by from Some design flaws. I purchased this to mount on an M&P Performance Center Ported 40 S&W. The optic has to be removed to lock the adjustment screws, due to the suppressor height sights. Was a pain to get it set. The positive is that the sights co-witness with the optic. The Viper would also shut itself off every 5 or 6 rounds. Contacted Vortex and they sent out some battery shims.(Very fast and courteous customer service!) It still kept shutting off after installing the shim. I'd read on some forum that the battery that comes with the optic is a little smaller than standard specs.(?) Replaced it with an Energizer and have had no problems since. Have put around 500 rounds down range with no problems!
Date published: 2017-06-15
Rated 5 out of 5 by from GReat red for the price I bought this red dot about a year ago to go on my fnx 45 tactical. Mounting it was extremely easy. It has held its zero this whole time with no adjustments needed after the initial zeroing. The 6 moa dot is great on a bright day. I usually turn it down when shooting in lower light so it doesn’t wash out the target. I like all the brightness adjustments. The only set back in my opinion is the optic needs to be removed to take out the lock screws. But this is minor as once it’s done I haven’t had to mess with it again. Overall I would definitely buy this again. A great product and you can’t beat the warranty from vortex!!!
Date published: 2017-11-07
Rated 5 out of 5 by from Robust and definitely worth every penny I purchased one of these last year for my 34 MOS and to say I’m impressed is an understatement. The optic is extremely compact and light weight, yet feels extremely durable. The red dot is easy to turn on, and there is a large range of brightness settings. In the year + that I’ve owned this, I’ve shot a good amount of rounds and I have yet to replace the battery, so the life there is good as well. I’ve never had a red dot on a pistol before this one, and the product makes it simple to pick up and use, and ultimately makes me a much better shooter. I was looking at the trijicon rmr but I’m very happy I went with vortex.
Date published: 2018-03-29
Rated 5 out of 5 by from Terrific performance and Exceptional Vortex Support Purchased this Red Dot for my new Ruger Mark IV Hunter. I had difficulty at the range dealing with the set screws and both windage and elevation adjustments. It turned out to be operator error but how I found out was by my sending the unit back to Vortex with an explanation of what I had done in making the adjustments. I received a E-mail stating that they had received my Viper and three days later I received a telephone call from a Vortex technician. He said he had been testing my Viper for two days. His assessment was that everything was working fine but wanted to make sure that I was satisfied with his explanation. He took the time to walk me through the adjustment process and provided additional information that addressed my concerns. His guidance was exceptional and sets Vortex as the mark for Customer Service and Support to be met by others.
Date published: 2017-06-15
Rated 5 out of 5 by from Best red dot on the market! I was looking for a quality red dot that I could use on my suppressed 9mm smg. I was a little worried that with the high rate of fire, the sight wouldn't maintain a perfect zero. To say I am impressed would be an understatement. I've shot about 5000 rds with it and it has maintained zero since the first day I mounted and sighted it in. I'm going to be purchasing a couple more for my defense handguns and turkey shotgun. I own one of the other higher priced red dots on the market but am going to sell it to get a couple more vipers. Hands down this sight is just as good if not better!
Date published: 2017-06-15
Rated 2 out of 5 by from Bad Information Hey all, so I have been reading up down and everyone swears the viper red dot has same floor print as burris fast fire 2&3. Well being that I deploy end of may I wanted to send my slide out to have work done on it by Lone Wolf before I had the red dot, and then pick up the viper asap. Lone Wolf did the slide cuts. Fits the fastfire very tight. However does not fit the viper. For starters the fast fire has arc where the viper is flat. Not happy I do not have time to send out slide and now i have to start fileing the red do t down and I am not a gunsmith so im sure its not gonna pretty when I just finished all my work on the gun. Ill send pics when im done
Date published: 2017-06-15
Rated 5 out of 5 by from Excellent red dot sight and a great value. I have used this sight on top of my M&P Performance Center 9mm in USPSA matches as well as my personal training. Thousands of rounds. At a course of instruction I had a chance to compare my Viper to other high priced red dots being carried by others in this advanced tactical instruction. Without exception the other students said they could not tell a difference between the Viper and the other high priced red dots.
Date published: 2017-07-30
Rated 5 out of 5 by from Pretty good on a 45 Tactical pistol Installed this on my 45 Tactical myself. The screws and base came with the 45 Tactical. Because this sight has the flexability to be used on a variety of platforms(pistol, rifle) it has some obvious issues. You have to take the sight off the weapon to change the battery, to adjust up-down left or right adjustments. Its a very tight fit on the weapon as the rubber sight cover wont fit in between the sight and the rear sight. I've had no issues with sight adjustment as its seems to be rock solid after +400 rounds. Its a lot of fun to shoot. I've had no issues with the battery life but I am careful about turning it off when not in use. I will update if I have any problems. I called Vortex during my install and they were very helpful.
Date published: 2017-06-15
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