Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number XC1000A-1 MCR-1 found under Receiver Light Signal by Communications Specialties. The National Stock Number assigned to this part is 6030015027455, and the Federal Supply Class is 6030 Fiber Optic Devices. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like XC1000A-1 MCR-1.