Artillery / Towed guns / M101

M101

General Facts

  • TYPE
    Towed howitzer

  • ORIGIN
    United states

  • NICKNAMES
    M2, M2A1 (World War 2 designation)
    C3 (M101/33 in Canadian service)
    HM-2 (French service)

  • DESIGNED
    1919 - 1930's

  • DESIGNER
    Rock Island Arsenal?

  • PRODUCTION
    1940 - 1953

  • PRODUCERS
    United states - Rock Island Arsenal

  • QUANTITY
    10.202

  • UNIT COST
    Unknown

  • CHARACTERISTICS
    Good rate of fire
    Rugged and reliable
    Good accuracy
    Limited range
    Rather heavy

Introduction

The M101 is a 105mm towed howitzer of US origin. Under the original designation M2 it was widely used during World War 2. After the war it was supplemented by the M102, until it was fully replaced.

Layout

The M101 uses a two wheel split trail carriage. The 22-caliber 105mm gun uses a hydropneumatic recoil mechanism and has no muzzle brake. A metal shield protects the crew of 8 against small arms fire and shell splinters over the frontal arc.

Firepower

The M101 fires its own range of 105mm ammunition. The maximum range is 11.5 km with standard ammunition and 15.1 km with rocket assisted ammunition. The maximum rate of fire is 10 rounds per minute, which is reduced to 3 rpm during sustained fire.

Mobility

A 2.5 t 6x6 truck is used to tow the gun and to carry the crew and ammunition. The lighter M102 was developed for increased mobility.

Users

The main user of the M101 was the United States. Over time many M101 became surplus to requirements they were exported to many nations with close ties to the USA. Most NATO nations used the M101, but nowadays most have been replaced. It remains in active use in South America, Africa and Asia.

Variants

M101

The M101 is a towed howitzer that uses a two wheel split trail carriage and a 105mm 22-caliber gun. The M101A1 differs from the M101 in having a larger shield that provides more protection and increases weight.

TypeTowed howitzer
Crew8
Ordnance105mm L/22 howitzer
Elevation-5 to +65°
Traverse?
Rate of fire10 rpm (max), 3 rpm (sustained)
Range2.0 km (minimum), 11.2 km (standard rounds)
Carriage2 wheel split trail carriage, 1.78 m track
Weight2.030 kg
Length5.99 m (travelling)
Width2.15 m
Height1.52 m
Towing vehicle6x6 truck
Speed?
RemarksGun shield
TypeTowed howitzer
Crew8
Ordnance105mm L/22 howitzer
Elevation-5 to +65°
Traverse?
Rate of fire10 rpm (max), 3 rpm (sustained)
Range2.0 km (minimum), 11.2 km (standard rounds)
Carriage2 wheel split trail carriage, 1.78 m track
Weight2.260 kg
Length5.99 m (travelling)
Width2.15 m
Height1.58 m
Towing vehicle6x6 truck
Speed?
RemarksGun shield

M101/33

The M101/33 is an M101 upgraded by RDM Technology. The riginal 22-caliber gun has been replaced by a 33-caliber gun. This results in an increased range of 15.7 km opposed to the original 11.2 km. Rocket assisted rounds can be fired out to 19.5 km. In order to reduce stress on the carriage the shield has been removed.

TypeTowed howitzer
Crew8
Ordnance105mm L/33 howitzer
Elevation-5 to +70°
Traverse?
Rate of fire10 rpm (max), 3 rpm (sustained)
Range2.1 km (minimum), 15.7 km (standard rounds), 19.5 km (assisted rounds)
Carriage2 wheel split trail carriage, 1.78 m track
Weight2.150 kg
Length7.40 m (travelling)
Width2.15 m
Height1.55 m
Towing vehicle6x6 truck
Speed?
Remarks-

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