While mostly obsolete by the time the war broke out, it did prove useful on the Italian Front where it's high angle fire came in useful.

The so-called steel-bronze (92% copper bronze strengthened by autofrettage, see Franz von Uchatius) was considered inferior to steel as early as 1870s, but due to the lack of steel industry in Austria it was used for the barrel.

The siege carriage was a steel sledge-type and was equipped with a hydraulic braking device to help absorb the recoil forces.

The field carriage relied on chock blocks and a rope brake device to absorb the gun's recoil.

The M.80 had progressive twist rifling but due to having a differently designed breech it could not share shells with the similar 15 cm Mörser M 78.