Colt finally left the "loading gate concept" for a swing-out cylinder on its revolvers with the Colt M1889 Navy revolver, which resembled the Colt M1878 and was based on another design by Mason. The model was produced for three years between 1889 and 1892, and eclipsed by the Colt M1892 chambered in .38 Long Colt. The M1892 was replaced by the New Service Double Action revolver in 1899. In caliber .45 Colt, the New Service was accepted by the U.S. Military as the Model 1909 .45 revolver. The New Service revolver was available in other calibers such as .38 Special and, later in the 20th century, .45 ACP (as the M1917 revolver) and .357 Magnum.