Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number MRD-000-A11 found under Sight Reflex by L 3 Communications Eotech Inc. The National Stock Number assigned to this part is 1240016159880, and the Federal Supply Class is . Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like MRD-000-A11.