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Monstrum

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

Based on 300 reviews
Condition: New
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$39.99
Holiday Deal · 25% off was $52.99

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Availability: In Stock.
Fulfilled by Amazon
Arrives Monday, Nov 16
Order within 6 hours and 21 minutes

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At a glance

Condition
New
Color
Red Dot
Size
A1 Reticle
Model
RD215B2
Material
Aluminum
Package Weight
0.25 kg
Suggested Users
unisex-adult
In the box
Ares Red Dot
Warranty
Lifetime Warranty

Features 5

  • 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 M1 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.

Description

The Monstrum Ares Red Dot Sight 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. Comes with a parallax free circle cross reticle with a 2 MOA center dot. Electronically controlled illumination with multiple levels of intensity up to daylight bright. Ares Reflex Red Dot V2 Ares Green Dot V2 Ares Reflex Red Dot Ghost Red Dot V3 Cyborg Red Dot Cyborg Red Dot Combo Ghost Red Dot Combo

Specs 11

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
Model Name Monstrum Ares
Color Red Dot
Material Aluminum
Suggested Users unisex-adult
Manufacturer Monstrum

Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Monday, Nov 16

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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  • Financing through Apple Pay
  • Financing through Google Pay
Leasing options through Acima may also be available during checkout.

Learn more about financing & leasing here.

Similar Products

Top Amazon Reviews

Problem fixed, great customer support. Nice affordable sight.
Color: Red Dot Size: A1 Reticle
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.
Extremely happy with price point and performance
Color: Red Dot Size: A1 Reticle
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
Windage and elevation adjustment could have lower MOA
Color: Red Dot Size: A1 Reticle
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
unbeatable deal
Color: Green Dot Size: A1 Reticle
A phenomenal price for a high quality dot
Reviewed in the United States on August 27, 2026 by larry b.
Crazy amount of parallax, starburst
Color: Red Dot Size: A1 Reticle
This site is very inexpensive. That being said the amount of parallax makes it unusable for anything but plinking. By the time I turn it up bright enough to use outside on a sunny day there is a clear double image and a lot of star bursting in the reticle. As a point of reference on a 20 yard target moving your head to side to side while the rifle is on a rest you get roughly 12 inches of parallax, as in the reticle moves so much side to side/up and down on the target that it is aiming in a 12 in square! As a point of reference I checked my holson that is 10 times the price, it has about 1/4 inch of parallax on the same target at 20 yards, and it only starts on the extreme edges of the site. I do have an AR I built just for target practice, I will be using this site with a fixed front iron site post to keep it centered and avoid the extreme parallax, until I want to spend the money on a better one. ... show more
Reviewed in the United States on August 10, 2025 by Chase
Sweet Little Optic
Color: Green Dot Size: A1 Reticle
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
It’s fine for my use.
Color: Red Dot Size: A1 Reticle
Eh, good enough. Clear and bright, even in the day and seems to hold true through abuse. I have it on a shotgun, I wouldn’t use it for much requiring more precision.
Reviewed in the United States on August 11, 2026 by Jonathan Schwind
Would recommend, solid so far
Color: Red Dot Size: A1 Reticle
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.
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