Shop › DE 50AE 6" BARREL BLACK W/ BRAKE DE 50AE 6" BARREL BLACK W/ BRAKE $502.55 Magnum Research Barrel, .50 Action Express, 6", Picatinny Accessory Rail, With Muzzle Brake, Fits Desert Eagle MK XIX 50AE, Black BAR506IMB Add To Cart Added! Magnum Research Barrel, .50 Action Express, 6", Picatinny Accessory Rail, With Muzzle Brake, Fits Desert Eagle MK XIX 50AE, Black BAR506IMB