First, inspect the inside of your slide to ensure that you can remove the front sight in the same manner that a Glock front sight comes out. As long as it will, this set on Amazon should work. I've used these on my Glocks with great success to co-witness with my red dots. As you only need the front sight, $77 is not a bad price even though you won't use the rear sight. Stash the rear in case you ever decide to change from the rear sight dot mount you have now & go with a slide cut.

You could also contact Ameriglo directly to ask of they'd sell you a front sight only so you don't have to buy the set, if you don't think you'll ever do a slide cut dot mount.

I recommend the set with the orange front since your dot sight is green. They should be different colors so you don't get them confused at speed.

Amazon.com : TRUGLO Tritium Pro Glock Mos Hi Set - Orange (TG231G2MC) : Sports & Outdoors

Amazon.com : TRUGLO Tritium Pro Glock Mos Hi Set - Orange (TG231G2MC) : Sports & Outdoors

a.co

 

Thanks for that, I will investigate, as you wrote your answer I was looking at that very sight system on Amazon.

 

See my additional comments above.

 

From what I have read, the front and rear sights on the GX2 are compatible with Glock sights.
I know the rear is, because I purchased an Optic plate with the Glock dovetail and it fit perfectly.
Now I have the issue where my green dot in the optic is not Co-Witnessed with the stock GX2 front sight.

How do I go about finding a compatible front sight (Glock or other) that is taller than the OEM GX2 front sight?

But keep in mind that since you longer have a rear sight, you'll have no rear reference point to align with a taller front sight. Even if your rear dot sight mount also incorporates miniature 'rear iron sight' dots or a slight notch to act as a rear 'iron sight'..... that may not align with any taller front sight to result in a correct point of aim to impact when the electronic dot is off or out of service.

That's one of the downsides to using a red dot sight mount that replaces the gun's factory rear sight & why most of us just spend the money to have our slide cut & mount a electronic sight in that manner.