If you’re having problems with your RovyVon GL4 Pro not locking as tight to a Picatinny (1913) rail as tightly as it probably should, it’s not just you (assuming you’re using the right lug “key”). The first run of GL4 Pros appears to have had their rail grabber based on the (proprietary) Glock rail. This version of the grabber works really well with Glocks, but is just a teensy bit loose on Picatinny rails. You can sometimes shim it, which is what I did, but this winds up introducing some alignment issues, and is otherwise not a very satisfying solution.

But, good news: RovyVon has a new version of the lever that’s on newer GL4 Pros!

As you can see, the new lever has cut-outs that allow it to clamp MUCH harder. If you own an original GL4 Pro, you can email them for a warranty replacement if it’s causing you demonstrable problems.

As a reminder, the GL4 Pro is my budget go-to recommendation if you need “active IR” capabilities on a pistol. It’s under $300, it has very usable functionality across all its capabilities, and it’s more-or-less compatible with XVL2 holsters (sometimes with minor fitting).

It would also be my recommendation for shorty CCs… but I may have something else you should look at. Stay tuned.