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Monstrum

Monstrum Ares V2 Open Reflex Dot Sight for Rifles and Long Guns | with Shake Awake Illumination

  • Based on 281 reviews
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Availability: In Stock.
Fulfilled by Amazon
Arrives Wednesday, Aug 5
Order within 2 hours and 12 minutes
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Style: A1 Circle Cross Reticle


Color: Red Dot


Features

  • Open reflex sight for rapid target acquisition of close range targets out to 100+ yards. Open reflex sights offer better peripheral vision and greater situational awareness than enclosed tube red dots.
  • Offered in multiple different parallax free reticle configurations: A1 Circle Cross reticle, B1 Triangle Dot reticle, C1 Modified Crosshair reticle, and M2 multi-mode reticle with multiple selectable reticle options. Electronically controlled illumination with multiple levels of intensity up to daylight bright. Available in either red dot or green dot variants.
  • The Ares comes with a custom optical system with minimal power draw and Shake Awake motion sensing technology. The dot will automatically shut off after one hour and re-activate instantly upon movement, providing tens of thousands of hours of battery life on a single battery, up to 10 times longer than LED powered dots.
  • Integrated picatinny recoil lugs compatible with picatinny mounting platforms. For rifles and long guns. Not for use with pistols or handguns.
  • All Monstrum products are backed by a lifetime guarantee.

Description

The Monstrum Ares is an open reflex sight for rapid target acquisition of close range targets out to 100+ yards. Open reflex sights offer better peripheral vision and greater situational awareness than enclosed tube red dots. Offered in multiple different parallax free reticle configurations: A1 Circle Cross reticle, B1 Triangle Dot reticle, C1 Modified Crosshair reticle, and M2 multi-mode reticles with multiple selectable reticle options. Electronically controlled illumination with multiple levels of intensity up to daylight bright. Available in either red dot or green dot variants. The Ares comes with a custom optical system with minimal power draw and Shake Awake motion sensing technology. The dot will automatically shut off after one hour and re-activate instantly upon movement, providing tens of thousands of hours of battery life on a single battery, up to 10 times longer than LED powered red dots. Rugged 6061 grade aluminum scope housing. Integrated picatinny recoil lugs compatible with picatinny mounting platforms, built to withstand both rifle and shotgun recoil. All Monstrum products are backed by a lifetime guarantee.

Item Package Dimensions L x W x H: ‎4.14 x 2.88 x 2.25 inches


Package Weight: ‎0.25 kg


Brand Name: ‎Monstrum


Color: ‎Red Dot


Manufacturer: ‎Monstrum


Part Number: ‎RD215B2


Style: ‎A1 Circle Cross Reticle


Date First Available: January 28, 2025


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Wednesday, Aug 5

Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

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Leasing options through Acima may also be available during checkout.

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Similar Products

Top Amazon Reviews

    • Problem fixed, great customer support. Nice affordable sight.
Style: A1 Circle Cross Reticle Color: Red Dot
Update, Seller responded extremely quick and sent replacement within 48 hours. It works beautifully. Just left the range. Was easy to zero in, seems to hold zero great. Very well made and sturdy. Red dot is nice and bright. Actually blew my expectations really. Can't beat it for the price honestly. Easy to install. Comes with all that you need. If you want a nice affordable red dot this is the one. Definitely going to be checking out some of the other monstrum products for sure. I wanted to like this red dot. Felt well constructed. Fit it nicely on my 9mm carbine. But every few shots it powers off. Changed the battery. Did not help. Just keeps shutting off. Not to mention i can't get it to hold zero when it is actually powered on. Im going to try one more time. Got a whole new battery. If that doesn't work I will send it back. No point in having it if it keeps randomly turning on and off every few shots. Update, Seller contacted me and has been super helpful and fast responses. Getting the broke one replaced. I will update after I check that. ... show more
Reviewed in the United States on April 16, 2025 by Ricky m.
    • Sweet Little Optic
Style: A1 Circle Cross Reticle Color: Green Dot
This is a solid, quality product at a great price point. Very easy to install, set up and use. Fast target acquisition for close in (<100yds) self defense situations. Recommend.
Reviewed in the United States on July 1, 2026 by Amazon Customer
    • Windage and elevation adjustment could have lower MOA
Style: A1 Circle Cross Reticle Color: Red Dot
Love the shake awake feature and it can also be turned on by the power button and it a automatically goes off after being still for a while so it won't be dead the next time you get it out of the safe if you forget to turn it off. It's very well built and can be easily mounted in 5 minutes. It's brightness levels can be seen in a low light setting really well without being too bright that it glares, and its bright enough to clearly view the reticle on the brightest sunny day too. It's pretty accurate too its handled probably close to 5-6 thousand rounds of 5.56 on my AR and still holding where it was when zeroed. The only bad thing I can say is if your trying to get perfect zero at 125 yards like hole through hole 1 click of adjustment and its slightly over corrected, but its a great reflex for the money otherwise. Top notch. ... show more
Reviewed in the United States on October 27, 2025 by Shawn Chandler
    • Great sight for a great price
Style: A1 Circle Cross Reticle Color: Red Dot
For the price and quality, you cannot beat this scope. The sight remains accurate and is easy to use. It is also easy to sight in. The scope offers a nice field of view, making it easy to hit the bullseye every time. My friend liked it so much that I bought one for him. He is also able to hit the bullseye consistently using this sight. ... show more
Reviewed in the United States on May 1, 2026 by Scott Gibson
    • Extremely happy with price point and performance
Style: A1 Circle Cross Reticle Color: Red Dot
I absolutely love the Monstrum Ares V2. The clarity is excellent, the construction is solid, and the overall performance far exceeds what you'd expect at this price point. It feels rugged and dependable, with smooth adjustments and crisp, repeatable turrets. The illuminated reticle is clean and easy to use in all lighting conditions, and the eye relief is generous enough to stay comfortable during extended shooting sessions. Zeroing it was simple, and it has held zero perfectly ever since. Honestly, this optic delivers the kind of quality and functionality you'd expect from a much more expensive scope. If you're looking for a reliable, durable, and feature-rich LPVO without breaking the bank, the Ares V2 is a fantastic choice. I couldn’t be happier with it. ... show more
Reviewed in the United States on May 28, 2025 by JSAT
    • Absolute worst dot I've ever bought on Amazon
Style: A1 Circle Cross Reticle Color: Red Dot
This thing ironically had more positive reviews than most cheap dots on Amazon, so I thought I'd hit the jackpot at the price. And yes, I've bought tons of other cheap optics on here so I know what to expect. And many of them are great. This was complete garbage on every level. It seemed good at first, super weighty, quality seemed solid, I thought I had scored. It only went downhill from there... - included battery dead - no hex tool for the picatinny screws - won't even mount straight, looks horrible at a super noticable angle - battery compartment lid barely moved and creaked like it was a hundred years old and rusted shut - picatinny screws are as soft as mashed potatoes and stripped after literally one normal tightening - shake awake worked literally 3 times then completely died so long story short, a completely trash, unfunctional, pointless paperweight. of all the budget dots i've bought on Amazon (CVLife always delivers) this is hands-down the worst. i wouldn't touch this again with a ten-foot pole. ... show more
Reviewed in the United States on July 18, 2025 by b
    • Would recommend, solid so far
Style: A1 Circle Cross Reticle Color: Red Dot
Simple, stylish, solid, best open budget red dot, feels premium, would buy again.
Reviewed in the United States on June 23, 2026 by Dr. M.
    • Good in a pinch
Style: A1 Circle Cross Reticle Color: Green Dot
Put it on my Ruger 10/22 for steel challenge and fits picatinny rail well. I'm having issues with it going dark for a split second every time I pull the trigger and at one point it went really dim the back to bright between shots. Other than that seems to hold zero and the reticle is nice. Make sure to keep the emitter clean as that will cause some blurriness. Decent optic for the price. ... show more
Reviewed in the United States on March 10, 2026 by david

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