Gears Categories: Select a Category Cylinder Heads Pistons Bearings Other Upgrade Parts Spring Sets AEG Springs Nozzles Piston Heads Mosfet Cylinders Triggers Gears Rocket Airsoft Shim Set $3.99 SHS 12:1 Gear Set $28.00 Rocket Airsoft Dual Sector Gear $20.00 Rocket Airsoft Gear Set $20.00