Carriage, Motor, 40mm Gun, M34

Overview

Carriage, Motor, 40mm Gun, M34
General Data
Type	Self-Propelled Anti-Aircraft
Place of Origin	United States of America
Designed	1950
Produced	1950
Number Built	104
In Service	1951 - ?
Development
Developed From	M15A1 CGMC
Armament
Main Gun	40mm M1
Traverse	360°
Automotive
Engine	White 160AX I-6, liquid-cooled 6325.4cm² gasoline (72-octane) 150 HP @ 3,000 rpm

The Carriage, Motor, 40mm Gun, M34 (abbreviated as M34 GMC) is an American self-propelled anti-aircraft gun developed in 1950 from the M15A1 CGMC.

Development

In 1950 self-propelled anti-aircraft guns such as the M16 MGMC and the M15A1 CGMC were shipped to Korea via Japan to fight in the Korean War. Ammunition shortages for the 37mm gun present on the M15A1 CGMC resulted in the replacement of the 37mm gun (and by extension the twin .50 caliber machine guns) with a 40mm M1. The conversion was called the Carriage, Motor, 40mm Gun, T19, although it was later classified as limited standard under OCM 33894 as Carriage, Motor, 40mm Gun, M34. 104 M15A1 CGMC were converted in Japan, where they then entered service with various units.

Variants

Carriage, Motor, Combination Gun, T28 Prototype model on the M2 Half-Track with 37mm M1A2 (in mount M3E1) and two watercooled .50 M2s. Four pilot models built. Carriage, Motor, Combination Gun, T28E1 Prototype model on the M3 Half-Track with 37mm M1A2 (in mount M3E1) and two watercooled .50 M2s. 78 built, 76 of which were sent into service. Carriage, Motor, Combination Gun, M15 Production model on the M3 Half-Track with 37mm M1A2 and two Machine Gun, Caliber .50, M2, HB, Flexible (together in Combination Gun Mount, M42). 600 built. Carriage, Motor, Combination Gun, M15E1 Model with Combination Gun Mount, T87 instead of M42, cannon is now located above the machine guns and the gunshield has been removed. Carriage, Motor, Combination Gun, M15A1 Adjusted and standardized M15E1 model. M54 Combination Gun Mount. 1,652 built. Derivatives Carriage, Motor, Gun, 40mm, M34 — T19 Converted M15A1 CGMC with all armament replaced with a Gun, Automatic, 40mm, M1. Carriage, Motor, Multiple Gun, T37 Converted T28 CGMC with four Machine Gun, Caliber .50, M2, HB, Flexible in M60 mount. Carriage, Motor, Multiple Gun, T37E1 Converted T28 CGMC with four Machine Gun, Caliber .50, M2, HB, Flexible in M60E1 mount. Foreign M15 Special ..?

Service

• 40th Infantry Division "Sunshine Division"
  • 140th AAA Battalion
    • B Battery
• Other units received the M34 GMC but are unknown.

United States of America Land Vehicles Cold War Period (1946 — 1990)

Half-Tracked Vehicles
Transport	[[]]
Trucks	[[]]
Amphibious Transport	[[]]
Gun Motor Carriages (GMC)	M34, 40mm • T19, 40mm
Howitzer Motor Carriages (HMC)	[[]]
Multiple Gun Motor Carriages (MGMC)	M16 (A1 • A2 • B)
Mortar Motor Carriages (MMC)	[[]]
Utility	[[]]

Wheeled Vehicles
Offensive / Defensive	Armament Carrier	M1025 (A1) • M1026 (A1) • M1043 (A1 • A2) • M1044 (A1) • M1114 • M1116
	Armored Cars	T55 • XM800W • XM808
	Directed Energy Weapon Carrier	HLONS
	Infantry Fighting Vehicles	LAV-25 (A1 • A2) • LAV-300 • LAV-600 • M1126 ICV
	Self-Propelled Anti-Aircraft Gun & SAM	AN/TWQ-1 Avenger • LAV-AD • M998 Avenger • M1097 Avenger
	Self-Propelled Anti-Tank Guided Missile	LAV-AT • M966 (A1) • M1025A2 • M1036 • M1045 (A1 • A2) • M1046 (A1) • M1115 • M1121 • M1134 ATGMV • M1167
	Self-Propelled Mortar	Dragon Fire • LAV-EFSS • LAV-M • M1129 MCV
	Self-Propelled Rocket Artillery	M142 HIMARS
	Tank Destroyer	M1128 MGS
Other	Ammunition Carrier	[[]]
	APC	[[]]
	Cargo	[[]]
	Command	M1009 • M1028 (A1)
	Dump Truck	M929 (A1 • A2) • M930 (A1 • A2)
	Engineering	M764
	Fuel Carrier	[[]]
	Generator Carrier	[[]]
	IMV	Cheetah • M1008 (A1)
	Medical	M1010
	MRAP	[[]]
	Reconnaissance	[[]]
	Prime Movers	M931 (A1 • A2) • M932 (A1 • A2) • M1031
	Utility	M1097 (A1 • A2)
	Water Carrier	M50 (A2 • A3)

Sources
Books	Online	Documents
• Halftrack, R.P. Hunnicutt