AR-15 Upper Build Kit - Left Hand Ejection
At MMC Armory we have wide variety of left handed upper build kits available with the same quality and value you have come to expect from our all our other components. Available calibers include .223 Wylde, 5.56 NATO,.224 Valkyrie, 300 Legend, .458 SOCOM, 12.7x42 (.50 Beowulf), .450 Bushmaster, 9mm, 7.62x39, 300 Blackout (AAC), 6.5 Creedmoor, 6.5 Gendel, 45 ACP, and .243 WIN.