Dovetail RMR, 407C/507C, XR Footprint 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 | Compatible with RMR Red Dots

Perfect fit . It’s a little wider than a Glock slide but it matched the optic. Easy install.

Although some reviews had difficulty installing the plate, it was not problematic using a sight pusher. Installation was less than 5 minutes. Included was every possible screw length you could need to finish the red dot installation. I am very satisfied.

Fits and works flawlessly

Very, very, very soft aluminum. Like, stripped immediately. And no; I didn’t use excessive force. I didn’t have the opportunity to. I didn’t even have time to get my torque wrench, because the provided screws were just long enough to allow the first two threads to catch and pull out before I could even get them snug. I’ve never had a problem with any Monstrum products before, but very disappointed in this one.

I use a lot of Monstrum products and haven't been disappointed yet. This high quality adapter plate is perfectly sized to slide into my G19, 17L and 21L with no problems. My 21 is converted to 460 Rowland which produces near 44 mag ballistics and this adapter plate has survived over 500 full-power loads. The sight fit tightly and when snugged down with some Loctite, hasn't moved. Installation is so easy a caveman can do it as long as he has some common sense.

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

Product is solid but included optic screws were too short and the screws that came with my optic were smaller than the mounting holes

It did exactly what is said to it was going to do