by ultimentra on Wed Apr 14, 2010 8:51 pm
The VFC AN/PEQ-15 has a flashlight and laser i believe, but the cheaper normal airsoft ones are using to store AEG batteries. For example on a gun like the Knights Armament PDW there wouldn't be and space to put a battery, so the wires go through the RIS rails, and into the PEQ box where they connect to the battery.