Monstrum Dovetail Red Dot Mounting Plate for Glock Pistols | for Non-MOS Version Glocks | Compatible with Glock 17 19 20 21 22 23 34 35 40 41 45 47

In the past, maybe 5 years back, I was never a fan of Monstrum products. In the past several years I've tried a few more of their products based of 704's YT reviews. Monstrum has come a very long way. This plate is way less expensive than most of the others out there. It was to used on a range only plinker tool. I can't tell you how impressed I was with the quality of the plate and the awesome fit. It worked out perfectly and saved me 50 to 75% compared to the "big name" dove tail mounting plates. It looks great with a really nice finish and it functions very reliably. Use blue loctite and take your time installing it. You'll be really happy with the end result.

Comes with no instructions, but not really needed. Brownells has a tutorial how to install a sight without special tools, i.e. sight pushers. Very tight fit to the Glock Gen 2 factory dovetail. Comes with all the needed fasteners for the mount & probably all red dots. You will need to provide your own blue thread locker. The Olight Osight SE fit perfectly.

The milling on this is really tight to spec. It didn’t want to tap into place so I froze it and it popped into place with a little encouragement. At least I know it’s tight! We’ll see about durability over the next few hundred rounds.

I have purchased Monstrum pro scope rings for my 300 win mag and it has held up to that recoil, so I felt comfortable buying this RMS mounting plate for my new red dot. After installing the plate on the slide, which was tedious, but doable and the fit was nice and tight, I was excited about mounting my red dot and taking to the range. Unfortunately, it did not make it through 50 rounds of basic 115 grain 9mm rounds 😕. Around the 40th round my red dot came flying off hitting me right in the face. The red dot and mounting screws completely dislodged hitting me just above my right eye. I cannot recommend this mounting plate just for safety reasons. Now I have to remove the broken plate off my slide and find a new plate to install.

Plate fit my receiver like a glove. I subsequently mounted my red dot sight to the plate with no issues. Quality appeared to be top notch and I had no issues with attaching it into my receiver sight slot and experienced no issues mounting the red dot sight (Bushnell) to the plate. I have no qualms about reordering should I have the need.

Does work well. Very well made an durable, Holds zero well. And puts together pretty easily with a nice fit and look.However. It does make the red dot sit high. So something to consider. But much cheaper than having a slide cut

I was happy with the attention to detail in packaging and the overall appearance of quality.I had to do a slight bit of filing on the dovetail’s anodizing for it to fit nice and tight on my Glock’s slide with just a little light tapping. I did not mind the extra work to get the fitment just right. It makes for a much more secure mount.The problem was after everything was centered perfectly and the set screw was locktighted in place, when I was mounting the RDS to the mount, one of the screws would not start into the mount’s threads because of either too much anodizing or poor machining.So the whole thing had to be uninstalled and the I had to run a tap through the threads.From the amount of shavings, I have to conclude that it was poor machining. Not a deal breaker for me. Sh”t happens and you can’t inspect every single piece that gets manufactured at the price point these mounts are sold for. But, I did want to let anyone that does not have a minimum of mechanical skills to know that they may or may not encounter difficulties and need a hand with installation.Obviously, I can not comment on durability until I run through a couple of qualification sessions with it, and honestly this was only purchased by me to try and see if I wanted to go through the process of milling a slide or two on my pistols and use a RDS permanently.

Just installed this on my G17 and I'm blown away by the fit, finish and ease of installation 20 minlocked up tight and my Holosun HS407C attached with no issues. bore sighted , tested and excellent quality looks great.The best part is I can reverse it if needed. No expensive slide cut or MOS slide needed. Recommend this item to anyone.Disregard 99% of negative issues reported most are installer related not the plate