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.
If you’re like me, and in love with the RovyVon GL4 Pro, but think the IR illuminator just doesn’t throw far enough, Villain Weapon Systems and Cold Harbour Supply have just what you’re looking for: an External Focus Lens for the RovyVon GL4 Pro/XL/FP.
As you can see, it clamps on to the illuminator head, which means that it’s probably not going to be compatible with holsters (and thus not much of a pistol solution). However, if you’re running a GL4 Pro/XL/FP on a PCC or similar, this is going to be a game changer for the IR illuminator. The photos on the CHS website show a marked reduction in flood and increase in throw, much like the EFL for the VIR II has. It’s not necessarily a super clean IR illuminator spotlight, but it’ll do the trick.
The price is $132 USD, which is not cheap, but for a 4-in-1 solution, a GL4 Pro+EFL is still cheaper than any other option. Remember that you can use the XVL2’s remote switch with the GL4 Pro to improve the control scheme with rifles/PCCs.