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107mm M30



Overview


107mm M30

American 107mm M30 mortar seen in a mortar pit during the Vietnam war.
Source: US Army - © Public domain

Origin
United States
Type
Heavy mortar
Entered service
1951
Status
Limited service
Development
Late 1940's
Developer
United States
Production
1951 - ?
Producer
United States
Norway - Kongsberg
South Korea - Hyundai WIA
Number produced
Many thousands produced
Designations
4.2 inch M30
M30F1 (Norwegian production)
KM30 (South Korean production)
Notable users
United States
Greece
Turkey
South Korea

Description


Introduction

The M30 is an early Cold War era mortar of US origin. It was developed in the United States after World War 2 to replace the World War 2 era M2 with a weapon with more range.

Design

The design of the M30 is similar to the World War 2 era M2 Chemical Mortar. Compared to most contemporary designs the M30 is unusual since it does not use a bipod, but a single strut on a square footing. The M30 is a conventional muzzle loaded, drop fired, rifled 107mm mortar.

Firepower

The M30 is able to fire most ammunition types used by the earlier M2 Chemical Mortar, but a newer range of ammunition was developed to provide increased range. The maximum range is 6.8 km for high explosive shells. Smoke and illumination shells can be fired out to 5.7 km. The maximum rate of fire is 18 rounds per minute, with a sustained rate of fire of 3 rounds per minute.

Mobility

As the M30 is very heavy, being nearly twice as heavy as the earlier M2 Chemical Mortar. The M30 is transported by tactical truck or carried in a M416A1 trailer and is assembled in a prepared position by its crew. Placing the M30 in a stable firing position is a time consuming effort. Due to its heavy weight many have been fitted on a turntable within a modified M113 armored personnel carrier called the M106.

Users

The M30 replaced the lighter M2 Chemical Mortar in US service and was in widespread use during the Vietnam War. The M30 was in turn replaced in US service by the M120, but many remain in service throughout the world.

Details


Facts 107mm M30
General
Origin
United States
Type
Mortar
Crew
4
Dimensions
Weight
305 kg in firing position
Ordnance
Type
107mm rifled mortar
Barrel length
1.52 m
Elevation
+40 to +65°
Traverse
7° left and right
360° on baseplate
Fire control
Sights
Indirect fire sight
Firepower
Rate of fire
18 rpm maximum
9 rpm normal
3 rpm sustained
Range
6.84 km maximum with M329A2 HE shell
5.65 km maximum with M329A1 HE shell
0.87 km minimum
Mobility
Towing vehicle
Carried by tactical truck
M416A1 trailer towed by jeep
Autonomous mobility
Too heavy for manhandling

Self-propelled variants


M84

The M84 is a mortar carrier based on the chassis of the M59 tracked armored personnel carrier.

K242A1

The K242A1 is a self-propelled mortar vehicle that is part of the KIFV family of tracked vehicles. It is fitted with a 107mm M30 mortar that fires through large roof hatches.