Shop › DE 50AE 6" BARREL BLACK DE 50AE 6" BARREL BLACK $411.70 Magnum Research Barrel, .50 Action Express, 6", Picatinny Accessory Rail, Fits Desert Eagle MK XIX 50AE, Black BAR506 Quantity: Add To Cart Added! Magnum Research Barrel, .50 Action Express, 6", Picatinny Accessory Rail, Fits Desert Eagle MK XIX 50AE, Black BAR506