7 cm Gebirgsgeschütz M 99

7 cm Gebirgsgeschütz M 99

A Gebirgsgeschütz M 99 in action
Type Mountain gun
Place of origin  Austria-Hungary
Service history
In service 1902?-1918
Used by  Austria-Hungary
Wars World War I
Production history
Designed 1899-1902
Number built 300
Specifications
Weight 315 kilograms (690 lb)

Shell 4.68 kg (10.3 lb)
Caliber 70 millimetres (2.8 in)
Breech eccentric interrupted screw
Recoil none
Carriage box trail
Elevation -10° to +26°
Muzzle velocity 310 m/s (1,000 ft/s)
Maximum range 4,800 m (5,200 yd)

The 7 cm Gebirgsgeschütz M 99 was a mountain gun used by Austria-Hungary during World War I. It was obsolete upon introduction as it had a bronze barrel and only a spring-loaded spade to absorb the recoil forces and it had to be relaid after every shot. Although, to be fair to the Austro-Hungarians, the high elevations required of mountain guns greatly complicated the provision of barrel recoil systems as the breech could recoil right into the ground, and it would be some years before satisfactory systems were worked out. These would result in the 7 cm Gebirgsgeschütz M 8 and M 9 that used the same barrel and ammunition as the M 99, but had gun shields and proper recoil systems. These guns weighed 402 kilograms (890 lb) and 456 kilograms (1,010 lb) respectively, although the exact differences between them are unclear other than they broke down into four and five loads for transport respectively.

The Gebirgsgeschütz M 99 broke down into 3 loads for transport.

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