The Belgians talks with Mauser prompted the Ottoman Empire, whose contract for Model 1887 rifles included an "escape clause" allowing them to alter their order to account for any new advancements the Mauser brothers made, to consider the design. In the end they ordered 280,000 pieces of an improved version of the 89 Mauser known as the Turkish Model 1890 rifle. It used a slightly modified 7.65 round. A Model 1890 carbine was also supplied in smaller numbers. These rifles saw service during the First Balkan War and World War I. Large numbers of these rifles were captured by the British Army during World War I and sent to supply the Belgian Army. Mauser 1890 rifles were fielded by both Nationalist and Sultanate armies during the Turkish War of Independence. Some of these rifles were captured by Kurdish and Circassian rebels. In the 1950s, these rifles were still kept in reserve but many of them were rebuilt and rechambered in 7.92×57mm during the 1930s. During the Cyprus crisis of 1963–64, old Mauser 1890 rifles were used by Turkish Cypriots.