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🎯 Lock your aim, level your game.
The Monstrum Low Profile Picatinny Anti-Cant Level Bubble is a compact, foldable bubble level designed to mount directly on your rifle’s Picatinny rail. Made from lightweight yet durable 6061 aluminum, it ensures precise vertical alignment to eliminate scope cant error and improve shot accuracy. Perfect for long-range shooters, it features a low-profile design that folds away when not in use and comes with a lifetime guarantee for lasting reliability.















| ASIN | B0C2JQ1PJK |
| Best Sellers Rank | #54,901 in Sports & Outdoors ( See Top 100 in Sports & Outdoors ) #204 in Gunsmithing Tools |
| Brand Name | Monstrum |
| Color | Black |
| Compatible Devices | Rifle |
| Customer Reviews | 3.9 3.9 out of 5 stars (338) |
| Item Weight | 0.1 Ounces |
| Manufacturer | Monstrum |
| Manufacturer Part Number | ZB101 |
| Material Type | Aluminum |
| Model Name | Low Profile Picatinny Anti-Cant Level Bubble |
| Model Number | ZB101 |
| Mounting Type | Picatinny Mount |
| Night vision | No |
| Product Style | Small Bubble |
| Sport Type | Hunting |
| Thread Type | 1913 |
| UPC | 810088812156 |
| Unit Count | 1.0 Count |
R**S
low ANIT-CANT level
This low level _Anit Cant is what I was looking for the is out of the way and you don't have to remove your eye from the scope to see it. It small and very handy.
G**Y
Great for long range shooing or even leveling scope
This level bubble fits directly to the picaninny rail and is easy to install. It is designed to either be used or folded in when not in use. It is nice for long range shooting, and it is nice that it can be folded in for storing or when not needed as well. I do own a number of bubbles that mount to the scope that are OK, but I do like this one better than any of the rest.
J**N
Level not true , very small bubble
I had high hopes for this item because I have used other Monstrum products in the past, but it was a disappointment. The bubble level is not true to actual level in comparison to other known levels. Another issue is the size. As you can see in my photos the level section is only 3/8" long in total and the bubble itself is a very small 1/8”. So if you are in position to shoot and this is mounted even at the closest point on the rail it is still 12" to this device. It is very hard to see not just because of the bubble size but also the length. It doesn't stick out far enough to see easily without moving your head. All in all I wouldn't recommend.
B**G
Not bad!
Would've liked to see more of a spring mechanism for the swivel retention rather then the screw type method but it stows away easily and I like the cover. It's just the double nut type effect that sometimes can be a pain to get it to swivel out when stowed against the gun out of the way. Maybe not much of a problem for smaller fingers but I wear xl gloves. I did a minor test with another bubble level and it appeared to match so its been a breeze to use when installing a scope by just leveling the rifle then comparing the bubbles. Would definitely recommend. My rifle has a big enough scope now that I leave the level out all the time with just the cover needing to be unscrewed. Its barely shorter then my parallax knob on my (arken EP-5) so I don't worry about bumping it.
A**R
Scope level
For the price you can’t go wrong. I like that it comes out to the side and can be pushed in when not in use. Good product
D**N
Whatever
I really don't know I kind of expected more than what I got I mean the bubble so micro small I have to have reading glasses on to see it I am having to buy a different one cuz this one was too small
M**6
Excellent design
Easy to install and no need to level the level because to goes right on the rail. Folds back when not needed.
D**Y
simple and you can tuck it in close for storage.
Tucks in tight under your scope. The large knurled wheel will let you fix it out to the side, or secure it tucked up against the rifle. The protective cover threads on and off. Nice that it sticks out far enough to see when you are using it, but can tuck it in close to not get banged up when going in storage.
Trustpilot
2 weeks ago
3 days ago