In 1902, 4,600 Model 1878 revolvers were produced for a U.S. Army contract. They were intended to equip the Philippine Constabulary under Brigadier General Henry T. Allen in the Philippine Insurrection. These revolvers had 6-inch barrels, hard rubber grips, and were chambered for the .45 Colt round. They had strengthened mainsprings and longer triggers to give the user more leverage, resulting in larger trigger guards. The strengthened mainspring was necessary to fire the .45 Government rounds which had a less sensitive primer compared to the civilian .45 LC ammunition. Many people have incorrectly assumed that this was to allow the revolver to be operated while wearing gloves, so "Alaskan Model" is a misnomer. These revolvers are unofficially designated the Model 1902 (M1902).