7.7 cm FK 16
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The 7.7 cm Feldkanone 16 was a field gun used by Germany in World War I. Most surviving examples in German service were rebarreled after the war as the 7.5 cm FK 16 nA. Wikipedia
Barrel length: 2.695 m (8 ft 10 in) L/35
Caliber: 77 millimetres (3.0 in)
Carriage: box trail
Effective firing range: 9,100 m (10,000 yd); 7.2 kg (16 lb)(HE shell)
Maximum firing range: 10,700 m (11,700 yd) (gas shell)
Muzzle velocity: 545 m/s (1,790 ft/s)
No. built: 3,020+