A swift shadow passes over the grass and with a flick of the control stick you send it scudding up and to the left, its rotors blurred with speed. With a quadcopter kit you can assemble your own remote piloted four-rotor quadcopter, a small unmanned aircraft perfect for aviation hobbyists looking to explore more elaborate guidance and instrumentation than is offered on typical model helicopters and planes. A quadcopter frame kit mounts the four rotors that provide lift and guidance to the vehicle, balanced by the opposing neutral torque produced by all four engines running in sync. These vehicles are extremely maneuverable and can even be equipped with cameras for aerial video and audio recording, meaning you can make a record of each flight to chronicle your progress as an aviator and the performance of your quadcopter. You can buy a quadcopter kit from trusted sellers on eBay who provide access to huge inventories of aviation hobby supplies and tools, and offer fast and reliable shipping options to their customers.