Monstrum Low Profile Picatinny Riser Mount (0.5" H x 5.7" L), for Scopes and Optics

Easy to install. Works well to raise scope to acceptable level to mate with clip on NVD. Have not encountered any loosening on recoil; however, I used blue loctite and torqued to 45 ft lbs. The weight of the riser is negligible and its construction seems durable. So far very pleased with product.

Good quality. Fitment was exact. Installed in seconds. Used it to tie two planes together as one, rather than a riser. Serves the purpose perfectly.

Extremely well built AR riser. .5 inch was just right for my scope and rings. I tried the medium but it was a little too tall. My only complaint is the size of the locking bolt heads, they can interfere with scope ring bolts or a side charging upper. Not a major problem but a minor annoyance.

Monstrum Low Profile Picatinny Riser Mount (0.5" H x 5.7" L) Precise, solid, .5" high riser. Just what I needed to bump up my scope height. The riser I received was different than that shown in the product description photos. It did not have the "Monstrum" logo printed on it, (I am Ok with that) and the mounting nuts are hex nuts, tightened with a wrench, not the knurled thumb knobs shown in the pic. I am also Ok with that. This works for my needs. Price seems fair.

FITS AND WORKS GREAT . NICE QUALITY .

This is a good product. You should be aware that due to how it is made it does not work with the Vortex mounting systems on my 3x magnifier. If there were a 45 deg bevel machined off the side opposite the attachment screws it would work with Vortex. I think this is more of a vortex issue not the fault of this product. It worked fine with my Holosun Red Dot but that was not what I would be using with this product so I ended up returning it. In short, a well-made solid product that did not work for my particular use case.

I used one of these to bump my scope up by a half inch so that I could look into it without smashing my face into the stock. Seems to work well. Shooting well at 100 yds. I like the hex mounting bolts because it lets you use a torque wrench to get it tight enough to be secure but not so tight that you start bending stuff out of shape. Just bought another one for another rifle.

It would be better if this product had deeper slots in the thumb nuts. The slots, as they are, are not deep enough to fit any kind of coin or screwdriver in order to really tighten the nuts down. After tightening as much as I could based on finger strength alone, the nuts still came loose after about 20-30 rounds of .308. This meant that the rail could "wiggle" about 1/8" forward or backward - not enough to really make a difference, but still annoying. The solutions are, of course, to either a) loctite the nuts in place or b) use a wrench or something to clamp them down. But both options make it difficult to remove the rail (especially without a tool) if you need/want to. Instead, a deeper slot would allow you to clamp it tight with a coin and also loosen it with a coin, for instance.

Great rail for my setup. I’d recommend for anyone’s setup.

Wow. What a process, but finding this guy and having it fit as advertised brought it all together. Thank you.

Works well for both increased height and or extension of a small pic section

I have 2 risers, this one, and the 1" High costs $20. I like this one better for (1) 35% less money (2) This one comes with two cross sided screws (I don't know what it is called), the metal piece sits between rail slots to prevent it from sliding off the mounted position and the other one has flat screws and sits on the rail flush

This riser raises the sight only 0.5", NOT 0.8". Be aware. It served my purpose but perhaps not yours if you need that extra 0.3" of height. Otherwise it's just ok. Install it carefully and torque it carefully or it will cant slightly. I'm disappointed it is no better than Feyachi. It'll do, only just though.