Open links in new tab
  1. Copilot Answer
    Wikipedia
    https://en.wikipedia.org/wiki/M40_Gun_Motor_Carriage
    M40 Gun Motor Carriage - Wikipedia
    TypeSelf-propelled artillery
    Place of originUnited States
    No. built311
    Mass36.3 metric tons (80,000 lb)
    Description

    Equipped with a 155 mm M2 gun, it was designed to replace the earlier M12 gun motor carriage. Its prototype designation was the T38, but this was changed to the M40 in March 1945.
    A single pil… See more

    Gun section

    A complete gun section consisted of one M40 GMC and one M4A1 high speed tractor towing a 4-wheel, 8-ton M23 ammunition trailer. Each battery had four gun sections. The M4A1/M23 combination replaced the earlier M3… See more

    Variants

    The Army planned to use the same T38 chassis for a family of SP artillery:
    • Cargo carrier T30 – despite several being built, its production was cancelled in December 1944 to make more chassis available fo… See more

    Related vehicles

    • 105 mm howitzer motor carriage M7B1 – self-propelled 105 mm howitzer motor carriage based on the M4A3 Sherman chassis
    • 155 mm gun motor carriage M12 – self-propelled 155 mm gun motor carriage … See more

    Wikipedia text under CC-BY-SA license