Shop › DE 50AE 6" BARREL STS W/ BRAKE DE 50AE 6" BARREL STS W/ BRAKE $592.25 Magnum Research Barrel, .50 Action Express, 6", Picatinny Accessory Rail, With Muzzle Brake, Fits Desert Eagle MK XIX 50AE, Stainless Steel Finish, Silver BAR506SRMB Add To Cart Added! Magnum Research Barrel, .50 Action Express, 6", Picatinny Accessory Rail, With Muzzle Brake, Fits Desert Eagle MK XIX 50AE, Stainless Steel Finish, Silver BAR506SRMB