If you want to use a guncam that looks like an AN/PEQ-16 box, here is one made by Rummbolt using an already popular action camera that airsofters use... "In case you watched some of my early videos, you maybe remember my self-built PEQ-Box-Scope Cam. Back in the days, I modded the meanwhile quite outdated RunCam 2 camera into an AN/PEQ-15 housing. But during the last months, it has became quite unrealiable, and rebuilding is not really possible because certain necessary parts are no longer availabe.
It's a PEQ box in this Airsoftology Gear Guide. Jonathan Higgs reviews the Element AN/PEQ-16A Laser Pointer and LED Box. This 3 LED lights, a Red laser Pointer, Blue LED and IR which is useful for those who use Night Vision Devices. Mountable on rails there is a rotating toggle switch for the various LED lights and is activated by a Button or a Remote Pressure Switch.