Monstrum Low Profile Picatinny Anti-Cant Level Bubble

Great price. Appear to be of good quality. Easy to install. Look great and worked for what I needed.

Low profile, discrete, and holds up to large caliber recoil with its built in recoil lug. While small, it still provided a clear indication of rifle cant below the scope and was useful as a guide to lock in my bipod. I added threadlock before installing as it did not come with any applied. I like that this will not protrude or snag, unlike many scope-mounted levels.

Level works fine and easy install. Unfortunately my scope is too big to really see the level and I have to put my head off the cheek rest to see it. I'm sure with a smaller scope would be easy to see

Received this item and was very pleased. It tucked away nicely on the Picatinny rail directly below my scope and has helped to level my rifle using adjustable bipods on unlevel surfaces during several competitions. Its placement makes it an easy eye transition from the scope to the level without changing the cheek weld. I’m am beginning to assemble another custom competition rifle and you can bet on another of these being included in the overall design. As a competitive shooter I highly recommend this spirit bubble level as an addition to your accessories wether you just enjoy a day at the range, are an avid hunter, or a serious competitive match shooter like myself. Fantastic product!

This is a great item. I've bought of these so far. Easy to use and a good value. Accuracy seems spot on. Fit the rail perfect.

Absolutely necessary to level the rifle and you take it off and use it again and agail

First off, great service by Monstrum - no complaints there. The level is very visible and was accurate. The machining was very nice and the finish was very even. The hardware is cheap, as expected. What was uninspiring was the level itself was held in place by some sort of rubber cement which had bubbled at the surface - maybe due to heat in storage, I don't know. Might not have affected function in the long term, though I had my doubts about the hardware too, so I returned it, no problem.Bottom line: it's typical Chinese quality. I'd feel fine putting it on an airsoft gun or a budget build, but nothing that's going to see any real use. If you want a decent level at a low price, this exists, but it's also cheaper directly off Monstrum's website.

The vial had orange fuzzy particles inside which caused the bubble to hang up effecting both its responsiveness and accuracy. You could see this with the naked eye even without magnification. There is clearly ZERO Chinese qulaity control (sic) at this factory.