155 mm gun M1
The 155 mm gun M1 was a 155 millimeter caliber field gun developed and used by the United States military. Nicknamed "Long Tom", it was produced in M1 and M2 variants, later known as the M59. Wikipedia
Barrel length: 6.97 m (22 ft 10 in) L/45
Breech: Asbury mechanism
Caliber: 155 mm (6.10 in)
Carriage: M1 Carriage
Crew: 14
Designed: 1918–1938
Elevation: −2°/+65°