Monroe MacGregor LLC (MMI) is a small veteran owned business which is compliant with the ISO 9001:2008 & AS9120:2009 standards. We are a leading secondary market stocking distributor of electronic components, aerospace hardware, rotables and expendables. We service the leading Original Equipment Manufacturers (OEM's), Electronic Contract Manufacturers (ECM's) and Maintenance Repair and Operations (MRO's) worldwide.