Viper Red Dot

Viper® Red Dot

Viper Red Dot is rated 4.5 out of 5 by 101.
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MSRP $349.99


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.

Battery Life: Up to 150 hours on highest setting. Up to 30,000 hours on lower settings.

Viper Red Dot Dimensions

Included in the Box
  • Weaver / Picatinny mount
  • T-10 Torx wrench
  • CR 2032 battery
  • Lens cloth
  • Flathead wrench
  • Protective cover
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
Parts Diagram (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 for reliable performance in all environments.
Shockproof Rugged construction withstands recoil and impact.
Matte Anodized Finish Corrosion and wear resistant anodization provides 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 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 compact red dot for the money. My favorite Red Dot. I put the Viper on my FNP 45 Tac and it's great. I ended up getting a 3 MOA Venom for my 22/45 Lite but honestly can't tell the difference in the size of the dot. Ended up going with another Viper I got my FN 509 Tac because I really prefer the Aesthetics of the Viper over the Venom and the taller window. Only drawback is the set screws on the back of it are not accessible because of the location of the rear sight on both the FN pistols. So I just set the set screws just tight enough to put a slight amount of tension and they seem to hold zero just fine.
Date published: 2019-05-29
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 Descent!!! I bought a Canik TP9SFx that included a Viper red dot. I never had an optic on a handgun and was really impressed. The brightness settings are great for indoor or outdoor use and is easily adjusted. Not only does it look great on my gun but it performs amazing as well. I literally took the red dot out of the box, mounted it to gun, and hit bullseye at 50 feet with ZERO adjustment. I'm approaching the 2,000 mark for shots fired and the Viper has held up perfect so far.
Date published: 2019-05-01
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
Rated 5 out of 5 by from Going to put the RMR out of business This red dot was put on my Performance Center Ported M&P 9L, and I've been impressed since I pulled it out of the box. The window border is much thinner than the RMR, giving a much less obstructed sight picture of the entire target. The dot is crisp and easily picked up, even in the bright sun. It cowitnesses perfectly with my suppressor sights and is very easy to zero. My only qualm was that you have to remove the optic to unlock the adjustment screws, but that is merely a slight inconvenience, not an issue with the product itself. As an Army Ranger and amateur USPSA shooter, this optic gets my seal of approval. Follow up shots are ridiculously fast and accurate, I have yet to kill a battery after roughly 6 months of use, and this thing has taken a fair amount of abuse from me with no signs of damage or wear. I highly recommend this product to anyone who wants quality carry optics without paying the crazy price of a trijicon RMR and other similar products. A fraction of the price and absolutely no quality lost to higher priced optics, you can't beat it.
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 4 out of 5 by from It's a solid red dot for the price. I own 3 Vortex Vipers that I use on Glock pistols. I had some initial hiccups with one of them failing to hold a zero (twice), but the customer service provided by Vortex was phenomenal. I shipped the item back Next Day Air and they returned the favor - had my replacement optic back in the same week! Can't beat that. All MRDS mounting on pistol slides will eventually fail... that's why it's important to go with a company that will stand behind the product and do it quickly! Vortex beats them all in this regard.
Date published: 2018-03-01
Rated 4 out of 5 by from Great Optics but with flaws I have this optic sitting on my M&p performance center and its great. Low profile to co-witness through the suppressor sights, tough, day light bright, easy controls and cant beat that vortex warranty. But, there is a major design flaw being that you have to tighten and un-tighten the screw locks on the back to zero and if you have a rear sight its almost impossible to zero as the sights blocks it and when dialing there no audible clicks or feedback and you have to remove the optic to change the battery and thus go through that whole hard process to re-zero otherwise great optic.
Date published: 2019-05-27
Rated 1 out of 5 by from Disappointed and a number of problems Was very disappointed with this sight. I'm a big Vortex fan and had high expectations for this sight but unfortunately I had a number of problems. When I initially got the sight it would not turn on. I replaced the battery and finally got it to work. After adjusting the sight i had to take it off my pistol in order to lock the windage and elevation because they are blocked by the rear sight. When I went to remount it the dot would not come back on. I took it off again unlocked it and readjusted the windage and remounted it. After it came back on the windage was stuck far left and would not move even close to my iron sights. I once again took the sight off and attempted to remount it but it will not turn back on at all now. Cons: The windage and elevation adjustments are not very positive and feel cheap. They do not click or indicate any adjustment has been made. The lockers on the back for the windage and elevation are blocked by the rear pistol sight. Sight intermittently works and does not seem to mount very flush to my FNX 45. I would give this at least two stars if I could get it to work or shoot with it but unfortunately I will have to return it. Pros: The sight looks great and is a great price point. The finish on the metal seems durable and tough.
Date published: 2017-06-15
Rated 1 out of 5 by from Kept having problems I have two of these sights. I bought one about a year ago, and I really liked it so I bought another one recently. The controls are easy. The only thing I have to complain about design-wise is the adjustment screws. They are super cheap. And if you use co witness sights you can’t lock them into place (the rear sight gets in the way.) My biggest problem was that they kept losing the zero. I put one on an FN 509 and it worked perfectly for a couple months, then one day randomly the dot moved and I was shooting 10-13 inches to the left. I adjusted it back no problem but a couple weeks later the same thing happened again. The dot just likes to jump around. I thought it might have been a problem with my gun, or maybe just a defective sight, but the other viper sight that I mounted on my 22 just did the same thing! Just randomly one day I am shooting way off to the side. These sights just cannot hold a zero for too long, and I cannot depend on them. Very frustrated
Date published: 2020-03-30
Rated 5 out of 5 by from Decently priced optic and amazing warranty? Look no further I recently acquired a Smith and Wesson M&P 9mm CORE and while flipping through optics trying to find one that wasn't 700 bucks, or only a one year warranty was difficult. I saw then that Vortex made the viper and decided to give it a shot. Needless to say it outperformed any red dot optic I worked with, it functions smoothly and consistently, and it helped me get fourth at my first pistol competition.
Date published: 2017-06-15
Rated 4 out of 5 by from Great Optic with one down side I originally purchased this optic for my CZ Scorpion EVO. The mount co witnessed well with the iron sights on the Scorpion. I found the lock set screws for elevation and windage to be fine on the Scorpion. The problem came into play when I decided to use the Viper on my Glock 34. The slide is cut to accept the Viper but the down side is I must remover the rear sight (suppressor sights front and rear) to unlock the elevation and windage screws. It is a bit of a pain when zeroing the sight. That being said I love Vortex products. I have several
Date published: 2018-01-22
Rated 5 out of 5 by from Could not be happier I just purchased the Viper for my Glock 34 gen4 MOS. Wow!!!! Not only does it look mean, it shoots meaner! Right or if the box, straight on the Glock and BOOM.... 1/2 inch left but straight on target. It literally took 7 shots and I was zeroed in. Then, the fun began. Shot after shot was beyond even my expectations. No problems. No complaints. I highly recommend the Viper!!! Thanks Vortex!
Date published: 2017-06-15
Rated 5 out of 5 by from Probably the best pistol red dot option on the market! Used on G19c. I haven't owned a lot of pistol red dots and/or RMR type optics but I have gotten to check out several of the popular options that my friends own and compare them with some of mine. This is my favorite so far. Fantastic option at this price point; I can't really see spending the extra money for a Trijicon because there really isn't a performance increase.
Date published: 2017-06-15
Rated 5 out of 5 by from Awesome Product, Great Value....hard to beat! Being so pleased with my first Viper and Strikefire2 I decided to get another Viper for my home defense G19 Gen4. The small size of the Viper and the 6 MOA dot are ideal for real world circumstances. It's robust construction and the ultra clear, large lens gives gives an immediate sense of thoughtful design and build quality. Adding co-witness iron sights is less of a hassle due to the low profile of the Viper, pretty much pick the sight you like and your done.The sight adjustment buttons are very tactile and the placement is very pragmatic. The brightness adjustments are ideal, you can go from very dim for low light or very bright for outdoor/daytime. I am also a fan of the locking adjustments, just one more feature to assure trouble free use when you need it most. I have drilled out the back side of my rear sight so I can have quick access to the adjustment lock(s). During drills/training I find the 6 MOA Dot to be ideal for again real life scenarios. Anything smaller is great for targets and range time... The large lens and thin bezels are ideal for Initial sight acquisition and follow up. And for the record the lens is incredibly robust, I have shot thousands of rounds in various conditions and have yet to scratch either side of the lens. It's great when you're able to get a product that you feel is worth significantly more than the money you paid. And on top of that, a lifetime warranty!
Date published: 2018-03-06
Rated 5 out of 5 by from Almost Unfair Bought this for a Glock 19 MOS. Mounts easily with UM Tactical Shim and screws you have to call Vortex for. Also ended up buying and installing Trijicon Night Suppressor Sights. After zeroing to the night sights, I took it to the range and at 25 yards could not miss the bullseye. And I've only been shooting for 2 months. Highly recommend.
Date published: 2017-06-15
Rated 3 out of 5 by from Battery Problems I've only had my Viper for about 3 weeks and its drained the same number of batteries already. They usually last about 3 or 4 days and then the optic doesn't come on anymore. Made sure that the optic was turned off properly every time but the battery still drained. When it worked though it worked flawlessly and I really enjoyed it. I've had luck with all vortex optics I've ever had so this is pretty surprising. Called customer service today and they were helpful. Sending the viper in tomorrow and hopefully all will be well.
Date published: 2017-06-15
Rated 1 out of 5 by from Bummer The good: This mounted right up to a S&W CORE 9mm. Its lightweight and low profile, so I was able to co-witness with my suppressor height sights. Controls are easy to use. Lifetime warranty, which I put to the test. The bad: Actually had to use the lifetime warranty twice in a couple months and only 1200 rounds. Customer service is awesome. I had cracked glass from holstering and drawing. Then lost the red dot. Then lost the ability to adjust the red dot and it situated itself extremely high right. I failed a qual because I didn't notice how far high I was aiming to get that dot. The location of the lock to adjust the dot is poorly thought out and very difficult to get to, without removing the sight. Changing batteries also requires removing the sight, but I never had to do that, as each one lasted a month to month and a half. I sold the third one, and would never, ever, trust this on a piece of equipment that I would use to protect myself or others. I quit the foreplay and went with another red dot that everyone else who actually uses their equipment uses. I really wanted to like Vortex and talk it up to everyone else who spent three times the amount on their red dots. Bummer.
Date published: 2018-05-27
Rated 3 out of 5 by from I hope the 2nd one is better I like the slim design so you can co-witness your iron sights. I don't like the sight adjustment lock screws position, you have to remove your rear pistol sight to be able to access these. I must have received a bad sight as it wouldn't hold zero and the electronics failed within a month. I called Vortex and they emailed me a service request and FedEx label to send it in. After they received it they either fixed it or are sending out a new one on 2 day FedEx. Great warranty service. Now I hope the new sight is a good one!
Date published: 2017-06-15
Rated 4 out of 5 by from This may be a first for this little guy Just received the Viper today...I had a standard red dot and decided to switch it up a bit. I plan to shoot 150 ft or less in deep woods. Dot is bright easy to operate. Do y’all think it will hold zero on a 44?
Date published: 2019-09-13
Rated 5 out of 5 by from Beautiful Sight with a Vortex Warranty I have been using this sight for over a month on my JM Mossberg 930. Love the beautiful, crisp dot. Battery life has been fine so far and the sight looks MEAN! The one reassuring thing that I know is........if something happens.......Vortex will take care of me and my sight. I can't ask for more than that. Hopefully, Vortex is still working on ways to mitigate the battery life if it's as bad as some of the reviews have made it out to be. I will keep shooting and update accordingly.
Date published: 2017-06-15
Rated 5 out of 5 by from Best pistol red dot made! Love this 6 moa dot on my p320. Clear, big nice dot great battery life. Easy to adjust auto cut off nice. Built very well. Trijicon can't compete!
Date published: 2017-11-30
Rated 5 out of 5 by from Reliable & Capable I bought the Vortex Viper Red Dot for my Glock Gen 4 MOS. Assemble was incredibly easy. I even visited the show room and was assisted by a very knowledgable associate that set me up with the proper mounting screws. This sight work perfectly every time I fire the gun! After purchasing this and a set of Vortex binocs, I'm convinced there is no other place to turn for hunting optics.
Date published: 2018-03-15
Rated 5 out of 5 by from Awesome Red Dot This is a top notch red dot, I have one of the competitors high $$ red dots and I like the Viper a lot better. I will buy one again!!!
Date published: 2017-06-15
Rated 5 out of 5 by from Fast, clear, and solid! I can’t say enough about the Viper Red Dot. Having mounted it to a Gen 3 Glock 22, it’s the right size of optic for a handgun that needs to be visible and clear night or day, comfortable to carry, and reliable and durable for any unexpected circumstance. The brightness adjustment is everything you’d need in a handgun mounted red dot, and it’s not obnoxiously huge, heavy, or cumbersome, where it becomes regrettable. It is the right size for a mid- to full-sized handgun.
Date published: 2019-05-12
Rated 4 out of 5 by from Quick n lethal I own multiple mini red dots from many companies, and I wish I would have bought this one first. For one the price was alot better and the features and clarity are exceptional, I found the viper to be very well made, and like I said I have a few so I'm always switching back n forth on different platforms and it actually returned to zero after taking it off, well very close to zero as I can tell, , I leave it on all the time and have yet to change a battery, and of course the VIP warranty is always there just in case, so don't be fooled by thinking that a higher price tag on a competitors model means it's superior, because with the viper you can't go wrong, crisp dot in all lighting conditions and very rugged housing that holds zero on rifles and handguns, I would buy this again without question, great product.
Date published: 2018-03-01
Rated 5 out of 5 by from On Target In 10 Rounds Mounted on a Glock 19 MOS. Removed rear stock sight so would have easy access to lock screws. I am no longer able to see iron sights well enough to shoot. I was able to group after 10 rounds and minimal adjustment. I did not have any issues or malfunctions (shutting off, trouble zeroing). Thanks again Vortex for a great product. This is my second red dot purchase. I purchased a Sparc II for my AR and have had no issues. Keep up the great work!
Date published: 2018-04-22
Rated 5 out of 5 by from My first Red Dot I purchased this red dot as a packaged deal with my Canik TP9 SFX. This is a fantastic red dot to start out with. Its simple and easy to work. The clarity is very good. Once I got it properly sighted in and understood fully how to shoot with a red dot I was cutting sticks in half at 40 feet. The finish on the viper has held up amazingly well. This was an awesome perchance and if your looking for your first red dot for a hand gun you wont be disappointed.
Date published: 2019-05-29
  • y_2020, m_6, d_30, h_15
  • bvseo_bulk, prod_bvrr, vn_bulk_3.0.9
  • cp_2, bvpage2n
  • co_hasreviews, tv_0, tr_101
  • loc_en_US, sid_VRD-6, prod, sort_[SortEntry(order=RELEVANCE, direction=DESCENDING)]
  • clientName_vortex-optics
  • bvseo_sdk, p_sdk, 3.2.1
  • CLOUD, getReviews, 8.26ms