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FREE refund/replacement until Jan 31, 2026 Learn more
FREE refund/replacement until Jan 31, 2026 Learn more
This item's return window has been extended for the holiday season: FREE refund/replacement until Jan 31, 2026
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Availability:
In Stock.
Arrives
Sunday, Dec 21
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Style: Guardian | 4-12x44 AO
Features
- Adjustable 4-12 times magnification, for targeting out to 800 yards and beyond
- An adjustable objective lens or AO - that allows for sharper focus of the target image, elimination of parallax, and range estimation
- Aircraft grade 6061 aluminum scope body with a sealed, nitrogen-charged tube for resistance to water and fog
- Precision 1/4 MOA/click windage and elevation adjustments with locking turrets
- Package includes High Profile Picatinny/Weaver Scope Rings and set of flip-up lens covers
Brand: Monstrum
Color: Black
Style: Guardian | 4-12x44 AO
Sport: Hunting
Item Weight: 15 Ounces
Material: Aluminum
Magnification Maximum: 12 x
Objective Lens Diameter: 50 Millimeters
Magnification Minimum: 4 x
Compatible Devices: Rifle
Brand: Monstrum
Color: Black
Style: Guardian | 4-12x44 AO
Sport: Hunting
Item Weight: 15 Ounces
Material: Aluminum
Magnification Maximum: 12 x
Objective Lens Diameter: 50 Millimeters
Magnification Minimum: 4 x
Compatible Devices: Rifle
Mounting Type: Weaver Mount
Night vision: No
Model Name: SG41244AO-B
Manufacturer: Monstrum
Reticle Type: MOA
UPC: 810088812064
Item Package Dimensions L x W x H: 15.91 x 3.5 x 2.99 inches
Package Weight: 0.95 Kilograms
Brand Name: Monstrum
Part Number: SG41244AO-B
Included Components: Guardian Scope, One Pair High Profile Scope Rings, One Pair Spring-Loaded Flip-up Lens Covers
Date First Available: December 5, 2022
Frequently asked questions
If you place your order now, the estimated arrival date for this product is:
Sunday, Dec 21
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.
To initiate a return, please visit our Returns Center.
View our full returns policy here.
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Top Amazon Reviews
Purchased a Ruger Precision .22lr to see if I liked the platform before I went with it for a 6.5 Creedmor. As the RPR .22 was only $350 I felt a little silly mounting a Burris or Leopold optic on a range toy. Saw the reviews on the Monstrom sights and figured for this price I would be getting an optic with lots of corners cut in build quality and components. It's cheaper than a box of good ammo so I really thought this would be on my rifle for one range trip then end up in my box'o'' old parts. Well I was surprised by the build quality. The tolerances on the tube, adjustment points, and even the mount felt and looked really good. Optic is a bit heavier than the specs but I will let that slide as it's a couple ounces. The glass that I thought would be super cheap with irregular appeture and poor clarity was pretty clear. This does not have the pristine image and sharp clarity of a Leupold's VX entry optic but you are paying $300 less. I have ZERO complaints about the quality and construction of this optic for less than $60 bucks. It exceeded my admittedly very low expectations by a wide margin. The reticule is also very basic and the manual did not provide adequate explanation of the mils appropriate caliber and load to provide what I think is a requirement for this style reticule. Don't think your getting a true FFP range finder finders on this glass. But, again it's a 50 dollar scope you shouldn't. The AO dial did allow a guesstimate of the distance to target by assessing the optical sharpness. It is a feature that you really should not see at this price point and it works. That is probably because the biggest surprise of this optic was the glass. It is not just adequate I would definitely say it is very good. The parallax adjustment was not spectacular but was comparable to what I would expect on a mid range Burris or Vortex. Bottom line it's good glass that allows for an adequate range calculation and provides a more than adequate visual acuity even at 9x. Again, I have seen better but this is the best glass and controls you will get for the money So I mounted this shockingly good quality optic to the Ruger and headed to the range. Mount was super easy, it's a picatinny if you can't figure it out you should not be playing with a firearm. So I started at 100 yards and was off paper the first shot at min magnification. Turned the elevation and windage dials one rotation unit each and missed again. Gave them a couple more twists and I was on paper. Took a couple shots to figure out the mils, which are set to I think 62 grain 5.56 or .223, definitely not a .22lr. I took a couple more shots from a full mount and got the feel for the reticule mils and the drop on the Hornady .22 I was firing. I pulled back to 50 yards and found zero in a 3 shots Pushed back out to 100 and was able to get a good zero after learning the system and adjustments. The Optic was a bit more than the round I was shooting should have so I put that on me underestimating the Scope. Windage and Elevation have nice firm click and resistance. Once you know what a rotational unit is going to do this optic is easy to zero. The Mag and AOcontrols worked well and the parallax was minimal. Eye relief was excellent. I was shooting a bolt action precision chasis rifle so recoil was almost non-existent. That said this optic easily held zero over probably 200 shots that day. The caps were ok more than I expected but the cheapest feeling component of the system. I have to say I was blown away that a scope with the quality and accuracy of this optic was in junk toy scope price range. Is it a $2,000 scope NOPE. It is comparable or better than many $300 - $500 dollar optics I've had from Burris and Vortex. Best damn scope I've ever used that was $50 bucks without a doubt. The Monstrum never went in the box'imparts it is still on the Ruger. Shoots great. For the money this is a no brainer and could easily be used with .223 or .270. I'm not sure how it would handle .308+; but it probably would hold a zero and be a great optic for hunting open terrain. I can't say this and mean it more, if your learning to distance shoot this is would be a great way to learn fundamentals. Without breaking the bank. A low end Rem 700 and this scope will leave you hundreds to spend on instruction and practice ammo. It exceeds all expectations and will give you a scope that feels and performs like one that is 6 times it's price. The best optic for your money period. Just don't put one on a Ruger Precision because that is a crack gun and gets you hooked fast and will quickly result in desire for one of his big brothers. I really loved the chasis and trigger and shockingly the optic. I have subsequently added a Alpha FFP1x6 24 to an AR race gun that my buddies all admitted shot as well as their $600+ FFP's. Beginning distance shooters can't go wrong with this high value optic you won't be out shooting your glass anytime soon. Seasoned shooters looking for a bargain or a practice rifle scope will be pleased as well. This optic changed my old rule the optic should be at least the cost of the rifle and double or triple if your going to 1,000+ shots. I can assure you this rifle can out to 200 yards with quality .22lr. It's the round not the optic that is limited the range and the optic was 1/8th the price of the gun. When I get the Ruger Precision in 6.5 I will likely give a G3 Monstrum the first crack at the picatinny rail. That will buy me a ton of rounds to enjoy the gun over the Leupold I would have been saving for months to buy. Fully recommended not just a good scope for the money but just a good scope period!
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Reviewed in the United States on November 13, 2020 by Shannon Credle
Style: Guardian | 4-12x44 AO
Clean Glass, nice zoom, good illumination. I have a Vortex Strike eagle LPVO and I think this is just as good for less than a quarter of the cost. Haven’t gotten to test it out but from looking through the glass and messing around, it has amazing potential. Not to mention the lifetime warranty you get with Monstrum. Testing out more of their products soon!
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Reviewed in the United States on March 18, 2024 by Sam
Style: Guardian | 4-12x44 AO
I put this scope on a break barrel .22 pellet gun. Lots of vibrations holds zero great for the price.
Reviewed in the United States on January 25, 2024 by Les Maxwell
Style: Guardian | 6-18x50 AO
The construe parallax rifle scope I purchased exceeded my expectations in terms of optical clarity and precision. The parallax adjustment feature allows for crisp, distortion-free target acquisition at various distances. The scope's build quality is robust, and the turrets provide tactile and audible feedback, ensuring easy and accurate adjustments. Whether for hunting or precision shooting, this parallax rifle scope delivers consistent performance. The only minor downside is the relatively higher price point, but the optical quality and build justify the investment for enthusiasts seeking top-notch accuracy in their shooting experience.
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Reviewed in the United States on January 18, 2024 by GS
Style: Guardian | 6-18x50 AO
My Monstrum Guardian Series AO Rifle Scope with Parallax Adjustment, is a Second Focal Plane scope (my preferred Focal Plane for long-range shooting [750yds+]). The glass is perfect (clear, sharp presentation of illuminated crosshairs, and no halo or fog), and the 1" tube is solid and well made. The 1/4 MOA/click windage and elevation adjustable turrets have screw-on covers to keep your adjustments secure once zeroed, and the clicks are smooth and positive. I have a couple of scopes costing 10 times more than the Monstrum Guardian Series AO Rifle Scope, and I bought it "just to check it out" because of the low-end price. I have used several Monstrum cantilever mounts, and other Monstrum products which impressed me enough to try their optics, and the Monstrum Guardian Series AO Rifle Scope with Parallax Adjustment surpassed my expectations. Monstrum provides an outstanding scope at a bargain price in the 6-18 power range. You are reading this review, and I have NO association with Monstrum other than as a customer, so if you're looking for a 6-18 variable optic, I STRONGLY recommend the Monstrum Guardian Series AO Rifle Scope! If you don't like it and bought it from Amazon, you can return it for credit or replacement.
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Reviewed in the United States on December 5, 2023 by Gil
Style: Guardian | 3-9x40 AO
For the price this is a nice hunting scope. Hunting in FL can sometimes put you in dense canopies and this helps with a low light level
Reviewed in the United States on February 17, 2024 by Jeff Reed
Style: Guardian | 3-9x40 AO
Excellent hunting scope. Glass is nice and reticle is clear. Holds zero on 22lr. Liked it so much i ordered another for my slug gun.
Reviewed in the United States on February 26, 2024 by mickey