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Availability:
In Stock.
Arrives
Monday, Oct 19
Color: Black
Size: 30 mm
Features
- Dual ring scope mount available for both standard 1 inch and standard 30mm tube rifle scopes
- Slim profile design offers the weight of lightweight scope rings with the added rigidity and convenience of a one piece mount
- Mounts to any flat top Picatinny rail equipped rifle
- 2 inches of forward extension allows extra flexibility for optimum eye relief and shooting position
- 5 ounces in weight and 5 inches in total length, with a base of 3 inches and 2.5 inches of spacing between the rings
Description
Crafted from 6061 Aircraft Grade Aluminum. At a weight comparable to a set of lightweight rings, it provides the added rigidity and convenience of a one piece mount. The mount is built for standard 1 inch tube scopes for mounting to any standard Picatinny rail equipped rifle. This scope mount also features 4 square-integral recoil stops, which allows us to shave down the weight, while increasing the strength.
Item Package Dimensions L x W x H: 14.48 x 9.69 x 4.65 inches
Package Weight: 0.31 kg
Item Weight: 4.96 ounces
Brand Name: Monstrum
Color: Black
Material: Aluminum
Manufacturer: Monstrum
Part Number: ZR301-B
Size: 30 mm
Sport Type: Hunting
Date First Available: July 31, 2018
Frequently asked questions
If you place your order now, the estimated arrival date for this product is:
Monday, Oct 19
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
Color: Black
Size: 1 inch
great scope mount, I mounted on a heavy hitting 3 0 8 works as designed. A little red thread locker and a solid little scope made this a great setup. it has no added cant, so if you want log distance, the + is not there. It mounted easily and as expected. It is solid and does not drift. It is compatible with any picatiny rail. It looks great, and can be adjusted to center your eye relief of your scope for adjustment later if needed. between this mount and the mid tier scope, setting zero was a breeze. Once set, I have had no accuracy issues. For the price, this is a great deal for a solid mount.
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Reviewed in the United States on July 8, 2026 by DrB
Color: Black
Size: 1 inch
This is the third cantilever mount I've purchased from Monstrum. I have one holding a Vortex Crossfire II on my small game AR, one holding a Leupold 1.5-4x LPVO scope on my home defense setup, and this third just installed on my AR10 DMR build, waiting on a Primary Arms SLX 4-14x HUD illuminated reticle. I mention the builds and optics because many of you reading this review may be as skeptical as I was of using a $30 mount for $200-$300 optics. I’ll freely admit that these mounts lack the fit and finish of most top tier mounts that cost $100 and well above. However, they do perform way outside their price point, and I’m all about saving money fore more guns and optics if I cans find a RELIABLE affordable option. Also worth mentioning, I do use blue threadlocker on all hardware on all optics and mounts that I use, and I would recommend you do the same, regardless of what mount you use. Bottom line, these mounts work well. They hold zero, they’re fairly robust, and they even come with extra hardware... which is always a good thing to have. They wouldn’t be my first choice in gear to deploy with, but the quality you get at the rock-bottom-dollar “made of chinesium” budget construction of these things should be more than enough for the average shooter.
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Reviewed in the United States on June 24, 2020 by Rob
Color: Black
Size: 1 inch
I used my Wheeler alignment/lapping kit on this to see how good it was. Alignment was good between both rings. The pictures from lapping speak for themselves--looks like the mount needed it. The machining left some grooves in one of the top ring halves. In fairness, I didn't keep track of the top pieces the first time I took it apart--it may have done better if I'd marked them first thing. The threading seems to be good quality but the screws turned roughly in the holes. From what I can tell, they are not tapping the holes oversize to account for the added thickness of the anodizing. I ended up chasing all the threads with a tap to clean them up and the screws turned a lot more easily. I don't think this is something you _need_ to do. I already had the lapping kit and tap so no additional cost for me, but I spent a couple hours getting the mount up to the next level. I don't have a lot of spare time these days so in retrospect I think I would jump to the $60 range where less fussing would be required (but let's be honest I might have fussed with a fancier mount, too). And I have heard of folks needing to lap nicer mounts. Overall good value for the money. IMO most scope mounts are ridiculously overpriced for what they are. Nice to see these at a price regular folks can afford. $100 scope plus $30 dollar mount will work just fine for most folks (not everyone is trying to shoot a hair off a fly at 200 yards).
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Reviewed in the United States on April 9, 2023 by M. Mac Adam
Color: Black
Size: 1 inch
Worked great. Well made and just what I needed for my ar.
Reviewed in the United States on August 9, 2026 by Not as described I was sent tube socks instead of crew..
Color: Black
Size: 1 inch
I have purchased and installed several of these. They are light weight and hold the scopes rock solid. Why pay more for a name brand?
Reviewed in the United States on August 13, 2026 by The Bullskinner
Color: Flat Dark Earth
Size: 1 inch
Quality products, item as described. Quick delivery.
Reviewed in the United States on August 24, 2026 by CDL
Color: Flat Dark Earth
Size: 30 mm
Has worked great so far. Feels good (not heavy) and sits slightly higher than my old one which I love. Nice mount for the price for sure.
Reviewed in the United States on June 9, 2026 by Brendan White
Color: Black
Size: 1 inch
Did the trick, ironically holding a vortex scope but needed the extra eye relief. Seems like it's solid and will fit anything that the specs say it will. Comes with everything hardware wise and was easy to set up
Reviewed in the United States on June 9, 2026 by D. Schofield