Flight Controller Mikrokopter Stack w/ spare FC 2x MK FC 2.5 1x MK GPS 2.1 1x Navi 2.1 + External Compass Can provide pics of stack, it's all on an aircraft at the moment but easy to take out. Pick of spare FC included. Asking $500 USD or $800 Aud OBO Buyer pays shipping. Located in Sydney, Australia