The Maple Leaf Crazy Jet Barrel System is a super cool inner barrel design for airsoft gun upgrades. A 6.02mm precision Maple Leaf inner barrel with a finely tuned end piece that is slightly larger to create an "air cushion" surrounding the BB as it exits the barrel. This system reduces air turbulence as the BB leaves the barrel, greatly increasing its accuracy and intended trajectory. The barrel end is 6.12mm inner diameter to create the air insulation. Several types of barrel fits: GBB cut - works on AEG and gas gun hop up chambers (AEG must use AEG bucking)