Stupid Airsoft does an unboxing, installation, and field testing of the AceTech Quark-K tracer unit, which is modeled specifically for the Kel-Tec KSG airsoft shotgun replica. He purchased the unit used on eBay to mount on a Golden Eagle KSG, noting that the shotgun's proprietary barrel threads prevent standard tracers from fitting.

Acetech got their official presentation of the Acetech Quark-K With Bifrost Mod, the tracer unit compatible with the Tokyo Marui KSG Gas Shotgun... "ACETECH, officially integrated with Tokyo Marui KSG, will be launching two series of tracers.

L'antre Du Dingo got the new AceTech Quark-K tracer unit designed for the Tokyo Marui KSG Gas Shotgun. It is not only a trace unit as it has an integrated torch. With the BiFrost tech, it can do multicolour effect and the ability use regular BBs instead of just Tracer BBs. With its gyro sensor, it will automatically switch on/off the torch depending on the position of the tracer unit.