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Strike Industries G.U.M. Glock Version 2 Universal RMR Cut Optics Mount Adapter Plate
$54.95 $42.49 Save 23%
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Most Helpful Positive Review perfect fit
installed on my g30 paired with a vortex viper fits great on the slide and doesnt overlap
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Easy Install! Would recommend!

by Lucky, Verified Owner from CA, United States Written on January 10, 2026
sturdy build. Package comes with plenty of screws, thread locker, pins, and hex keys. Fits every model as described though there isnt too much literature on its installation.
Smacked it on with a soft face mallet and the slide locked into a vice, install yours as you please. Spent most of the installation at the end fine tuning it on center and making it parallel with the barrel. Took maybe 15mins.
Mounted on a Glock 19 and it hangs off either end by +/-1/8" and the mounting screws will dig into the slide.
It is also a little on thick side, which comes with the territory.
Holds zero @ ~25yrds after 200rnds of Herter's 115gr 9mm Target Load.
currently has a Crimson Trace CT-RAD Green Dot which uses the RMSc/Shield foot print IIRC and sits well within the margins of the plate.
it was the fastest, cleanest, most affordable option; to get an optic as a cut slide was $299.99 and milling the oem slide was not an option.
Worth considering!
Pros:
  • Afordable
  • easy to install
Cons:
  • Size (nitpicking)
Best Used for:
  • starter
Would recommend: Yes
Was it helpful to you? Yes | No

Nice adapter playe

by Mike, Verified Owner from FL, United States Written on December 25, 2025
Fits very well on a lot of different guns. Has many hole patterns.
Would recommend: Yes
Was it helpful to you? Yes | No

Easy fit optic mount for Glock

by Black Bart, Verified Owner from TX, United States Written on October 14, 2025
I’m no gunsmith but I am handy with tools. This was super easy to install and setup the optic. The original sight was easy to punch out and the SI GUM was easy to slip into place. Some light taps the a rubber hammer and all set. I wish I had a caliper to measure the centerline but I eyeballed well enough.
Pros:
  • Easy to install
Cons:
  • None
Best Used for:
  • Glock
Would recommend: Yes
Was it helpful to you? Yes | No

Great optic mount !

by Lynn Ball, from IN, United States Written on August 9, 2025
I was looking for a mount for my TX22 Gen 2 (non T.O.RO. )that would replace my rear dovetail sight. Found this one and Optics Planet had it in stock. It fits great and has so many mount options. I highly recommend it if your looking for a mounting plate that fits the Glock style rear sight.
Would recommend: Yes
Was it helpful to you? Yes | No

universal adapter plate works great.

by Leo, Verified Owner from Algeria Written on May 14, 2025
Great way to try out a new red dot before commiting to a more permanent mounting poatform.Leo
Would recommend: Yes
Was it helpful to you? Yes | No

GUM V2 glock gen 4

by Carl, from VA, United States Written on February 12, 2025
Mount was a perfect fit and easy to install. Mounted holosun 507 and works great!
Would recommend: Yes
Was it helpful to you? Yes | No

Great alternative to milling

by Smusk, from NY, United States Written on January 31, 2025
Was planning to mill my Glock 21 slide to mount an optic and saw this product. It is an amazing design how it can mount so many optic footprints. It is a strong heat treated steel that makes me confident the threads will not strip. Had to file the bottom of the dove tail surface a little to lessen the insertion force. Got it to push in about half way and used a small plastic mallet to drive it to center. It is the exact same width as my slide which made it easy to center by eye. Comes with every screw and locator pin size you would ever need. Highly recommend.
Pros:
  • Made of steel
  • Fits multiple optics
  • has stabilizing setscrews
  • lots of hardware for mounting optics
Cons:
  • Need to fit a little but not hard
Best Used for:
  • Great way to upgrade to optic
Would recommend: Yes
Was it helpful to you? Yes | No

Glock rear sight replacement that accommodates a red dot

by Mr. B, from OR, United States Written on June 19, 2024
The absolute worst product I have ever spent money on would never buy something like this again i don’t recommend due to the amount of work you put into it for it to not work just ridiculous. I honestly want my money back.
Pros:
  • None
Cons:
  • Garbage
  • POS
Best Used for:
  • Throwing into the river
Would recommend: No
0 of 3 found the following review helpful.
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