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Monstrum Offset Cantilever Dual Ring Scope Mount | 1 inch Diameter

4.6 4.6 out of 5 stars 3,946 ratings

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About this item

  • Dual ring scope mount for mounting standard 1 inch tube rifle scopes
  • Mounts to any flat top Picatinny rail equipped rifle
  • 2 inches of forward extension allows extra flexibility for optimum eye relief and shooting position
  • Lightweight 6061 grade aluminum construction
  • All Monstrum products are backed by a lifetime guarantee
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Monstrum Offset Cantilever Dual Ring Scope Mount | 1 inch Diameter

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Product Description

monstrum-tactical-optics-scopes-accessories-rails

MONSTRUM-TACTICAL-SCOPE-MOUNT-1-IN

MONSTRUM TACTICAL SCOPE MOUNT ZR254

MONSTRUM TACTICAL SCOPE MOUNT 1 IN 6 BOLTS

Weighs in at a mere 9 ounces!

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.

Built specifically for 1 inch scopes.

The mount is built for standard 1 inch tube scopes for mounting to any standard Picatinny rail equipped rifle.

The mount is 5.75 inches in total length. The base is 3 inches long with the mounting bolts spaced 2 inches apart, a minimum of 3 inches of rail space is required to install.

Heavy Duty Lockdown

The 12 hardened steel torx bolts allow you torque down your scope mount to specifications without worrying about stripping the screws like competitors.

The offset design provides an additional 2 inches of forward extension, allowing extra flexibility for optimum eye relief and shooting position.

Technical Specifications

Compatibility: 1.0 in Scope Tubes
Total Length: 5.8 in
Base Length: 3.0 in
Ring Space: 2.5 in (Distance Between Rings)
Center Height: 1.7 in (Center of Reticle to Top of Rifle Mount)
Profile Height: 1.0 in
Forward Extension: 2.0 in
Weight: 9.0 oz
Scope mount chart
scope-mount scope-mount Monstrum ZR251 Level Bubble 1" Scope Mount scope-mount scope-mount
ZR301 Monstrum 30mm Cantilever Scope Mount ZR251 Monstrum 1in Cantilever Scope Mount ZR251 Monstrum 1in Cantilever Scope Mount with Level Bubble ZR252 Monstrum 1 inch QR Cantilever Scope Mount ZR254 Montrum 1in Cantilever Scope Mount
Customer Reviews
4.6 out of 5 stars
7,201
4.6 out of 5 stars
7,201
4.5 out of 5 stars
184
4.4 out of 5 stars
2,481
4.6 out of 5 stars
3,946
Weight: 5.0 oz 5.0 oz 5.2 oz 5.8 oz 9.0 oz
6061 Aircraft Grade Aluminum:
Hardened Steel Hardware:
Locking Mechanism: (Mount to Rifle) Torx Bolts Torx Bolts Torx Bolts Quick Release Thumbscrews
Square Integral Recoil Stops: Partial Partial
Ring Space: (Distance Between Rings) 2.4 in 2.4 in 2.4 in 2.4 in 2.4 in
Base Length: 3.0 in 3.0 in 3.0 in 3.0 in 3.0 in
Protection: Lifetime Lifetime Lifetime Lifetime Lifetime

Product information

Technical Details

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Monstrum Offset Cantilever Dual Ring Scope Mount | 1 inch Diameter


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Customer reviews

4.6 out of 5 stars
4.6 out of 5
3,946 global ratings

Customers say

Customers like the quality, value, and performance of the aiming scope sight. For example, they mention it's a solid piece, works well, and is perfect for a budget build. That said, they're happy with ease of installation, appearance, and mount. That being said, some disagree on fit and screws.

AI-generated from the text of customer reviews

287 customers mention263 positive24 negative

Customers are satisfied with the quality of the aiming scope sight. They mention it's a solid piece, sturdy, and excellent. The unit is made without any issues and has a robust look. The mount is heavy construction and easy to mount. Customers also appreciate how well it holds.

"...about the six retaining screws on each ring but I appreciate how well it holds. Also, it is a true 25.4 mm ring diameter without tape on the inside...." Read more

"...Doesn't shoot loose. It may be cheap, but it ain't junk." Read more

"...sure to use some loctite on the screws and you'll have a cheap & solid scope mount." Read more

"This is a solid piece and can be mounted easily with just 1 "star" allen wrench...." Read more

168 customers mention147 positive21 negative

Customers like the value of the aiming scope sight. They say it's well built, and perfect for a budget build. Some mention that it functions as designed and is of excellent value.

"...Seems well built for the price, haven't taken it to the range yet and will update if any problems." Read more

"...The Monstrom products have been working well, and are a cost effective solution to the far higher end expensive scope mounts needed for much longer..." Read more

"Nice for the money. Only thing better would be if it had QD mounts . Works well ." Read more

"This mount had perfect alignment and works well. Very well made for price" Read more

85 customers mention85 positive0 negative

Customers are satisfied with the performance of the aiming scope sight. They mention that it works well, the machine work is flawless, and it functions as designed. Some say that it's the perfect solution for their problem.

"Loved it works great" Read more

"It works and works great I have had no issues with it in fact I have purchased one or two more for my other guns." Read more

"Nice for the money. Only thing better would be if it had QD mounts . Works well ." Read more

"This mount had perfect alignment and works well. Very well made for price" Read more

62 customers mention62 positive0 negative

Customers find the aiming scope sight easy to install and mount. They say it's a solid piece that can be mounted easily with just 1 star allen wrench. Customers also mention that it'll set up nicely and feels extremely robust.

"...While mounting this cantilever was easy, I failed to notice there were burrs on the edges of the saddles where the scope sits...." Read more

"This is a solid piece and can be mounted easily with just 1 "star" allen wrench...." Read more

"...All of the parts needed were included and I had no issues mounting a scope. So far it is exactly as described." Read more

"...Easy to mount and adjust for eye relief...." Read more

60 customers mention58 positive2 negative

Customers are satisfied with the appearance of the aiming scope sight. They mention that it looks good, has a nice finish, and is effective without compromising the appearance. They also say that the design features are quite sound and it's a good value for the price. The mounts are machined with a smooth FDE finish and the steel hardware has a matte black finish.

"...your check the tube size of the scope, Very well made everything is nice and tight fitting." Read more

"...Also, the steel hardware has a nice matte black finish on the first two, but it's shiny and splotchy on the third on, almost like paint or a marker...." Read more

"...No tooling marks and everything mates up perfectly. The edges are smooth and i love the fact that the built in rings are 6 screw...." Read more

"...than one would like (not much), but sturdy and effective without compromising the appearance...." Read more

53 customers mention50 positive3 negative

Customers are satisfied with the mount. They mention it's an excellent scope mount, easy to work with, and works great with their 40mm scope. Some say that the ring mounts were perfectly fine. Overall, most are happy with their purchase and recommend it to others.

"Mount seems fine , it’s a scope mount after all. Maybe a few finish blemishes here and there no big deal it’s was only a $28 mount...." Read more

"So first off this mount is great. However my rear screw doesn’t stay tight anymore and always a lot of wiggle...." Read more

"...Great mount at first glance, but isn’t a universal fit for their own optics. May have been my fault for not researching more in depth." Read more

"...That sucks too. Other than these two fails, this seems to be a good scope mount." Read more

119 customers mention72 positive47 negative

Customers are mixed about the fit of the aiming scope sight. Some mention that it's tight fitting and snugly mounts the scope perfectly. However, others say that the middle screw is too tight and the outer screws are loose. The quality is great, however, it didn't fit their 30mm scope and the mount to the rail would not tighten.

"...It clamps firm without distortion and maintains point of aim. The extra large locking studs engage the picatinny slots cleanly and remain tight...." Read more

"...Middle screw too tight? Now the outer screws are loose. Outer screws too tight? Middle screw is loose. Pain in the butt...." Read more

"...Six mounting screws for each ring--your scope ain't moving. Good fit, just remember to clamp down those mounting nuts with the supplied hex wrench..." Read more

"The mount is actually very good quality, no complaints about the fit or finish. The bubble level on the other hand is pretty much useless...." Read more

67 customers mention21 positive46 negative

Customers are mixed about the screws. Some mention that the built-in rings are 6 screw, and the cap has 6 screws per cap for retention. However, others say that one of the screws stripped on rail, the middle screw is loose, and that the mounting bolt immediately stripped out.

"...screws as much as I dared, but after a 10 round group, the mount was loose...." Read more

"...Both lost their hold on the scope when the threaded steel bushings backed out,,..." Read more

"...All of the parts needed were included and I had no issues mounting a scope. So far it is exactly as described." Read more

"...Now the outer screws are loose. Outer screws too tight? Middle screw is loose. Pain in the butt.Okay, then just take the middle screw...." Read more

Cautious but glad I took the chance
5 Stars
Cautious but glad I took the chance
I was a little bit worried about this purchase because of the price and not knowing anything about the company except from the reviews on Amazon. The reviews I read are spot on this is a quality product and when i installed my Burris 4.5-14 in it for my AR 15 it was a breeze ans seemed very solid since it is one piece. I like the ability to be able to position it where I want for the best performance on a pic rail and am considering it again for one that I have on the way, mine was the screw type mount but I would like to try the quick release also and my get one of those for this rifle and put this one on my Varmint Ar that is in the mail. Buy it you wont be sorry, plus it would make a nice mount for a block of wood to test repeatability of scopes.
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Top reviews from other countries

Jan
5.0 out of 5 stars Learn about the product before you order
Reviewed in Canada on April 16, 2023
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sloan
4.0 out of 5 stars A cheap way to mount you scope
Reviewed in Canada on December 4, 2023
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