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.

Very high quality. It's a little heavier than I expected, but it is a solid piece of aluminum and it is rock solid once installed. It provided perfect clearance for the 50mm objective bell scope on my AR. The only possible issue I could see beyond the weight is the large knobs to tighten the rail blocked my scope ring releases when mounted on the same side. They are handy for hand tightening, but it would be nice if it were shipped with regular nuts for a more compact installation option. It is a great value just as it is, though. All in all, I highly recommend this riser.

This riser seems to be well made and accurate in its dimensions. It fits perfectly on a Bushmaster AR and raises the scope almost perfectly to eye level. The thumb nuts allow it to be securely attached, and I foresee no problems with anything coming loose. It's a good product for a good price.

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.

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.

Good construction, levels a long range scope perfectly to the eye. The only issue I had with it is that after firing about 20 rounds (.223/5.56) the bolts loosened, and after tightening again it did the same thing. Went to the range a week later and jacked them down tighter with a flat head and it seemed to work fine.

Product as expected, fast shipping.

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.

But I kept getting the wrong size. Twice I received the .5" riser when I need and orderd the .8" riser twice. Not a quality issue but .5" doesn't work for me. .8" I could make work but I got .5" twice. Gave up. Customer service was fast but no clue what the problem was and why .5" won't work. So if you need a .5" riser go ahead and order their .8" riser. Quality is nice

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.