Upgrades include: -Airsoft Masterpiece Hop Up unit -Airsoft Masterpiece Hop Up Wheel -Airsoft Masterpiece Steel Hop Up Arm -AIP Steel Slide Catch -Laylax Nine Ball Gaskets in all mags -Maple Leaf i key -Maple leaf 75° Bucking -Maple Leaf 6.03 tight bore Barrel -Guarder Tokyo Marui 150% Hammer Spring -AIP 140% Recoil Spring -AIP 120% Nozzle Spring Also included are -2 extra CO2 magazines -belt magazine holster for the two extra mags -UTG 400 lumen flashlight -original barrel and hop up