One thing to create mayhem on the airsoft field where everybody will run for cover is use an HPA-powered LMG or MG. In this case, you may want to try this Airsoftjunkiez custom HPA M1919 which they demo in this video... "Airsoftjunkiez custom HPA 1919 built for Veterans for Airsoft. Installed a Wolverine Airsoft  Inferno 249 with PolarStar electronics for more control of the Rate of fire and nozzle dwell."