The most recent model of the Desert Eagle, the Mark XIX, is available in .357 Magnum, .44 Magnum, and .50 Action Express (or .50 AE). This model comes in a variety of different finishes, such as brushed chrome or titanium gold. Magnum Research offered this model in .440 Cor-bon caliber, a .50 AE derived case. There were less than 500 original .440 Cor-bon Desert Eagles imported into U.S. in December 2000. These are marked by the number 440 on the left lower side of the barrel, in numerals twice the size of other calibers, and without the preceding period. A number of .44 Magnum barrels were rechambered to produce .440 Corbon barrels, but these can be identified by the off-centered “.440” (with period) produced by adding the final 0 to the original barrel mark.