The 8 cm Feldkanone M 05 was a field gun used by Austria-Hungary during World War I. Guns captured by Italy were used as the Cannone da 77/28 modello 5. It was a conventional design, with its most notable feature being its obsolescent autofrettaged bronze (so-called steel-bronze) barrel, necessary because Austria-Hungary still had trouble making steel of the proper quality. Its development was quite prolonged as the Austrians took years to decide on the proper recoil system and type of breech. Even then production difficulties prevented its introduction into service until 1907.