Twin Gun Motor Carriage M19

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Arcade Realistic Simulator

Arcade Realistic Simulator

Arcade Realistic Simulator

General info

M19 GMC in the Garage.

The Twin Gun Motor Carriage M19 is a Rank IV American self-propelled anti-aircraft gun with a battle rating of 5.0. It is one of the first American vehicles to be released with the American ground tree in Update 1.45 "Steel Generals". Armed with a dual-mounted Bofors 40 mm gun system, the M19 provides a substantial firepower upgrade over the standard .50 caliber machine guns and 37 mm autocannon used in its predecessors M16 MGMC and M15 CGMC.

The main purpose, usage and tactics recommendations

General play style

The M19 TGMC is a Self Propelled Anti-Air vehicle. Not much more to say. Stay behind and close to allies, but outside the enemies view-range and with clear line of sight to the horizon for low aircraft.

Vehicle characteristics

Compared to certain other SPAAs (ZSU-37, Wirbelwind, Multiple Gun Motor Carriage M13, etc.), the M19 cannot be used effectively in an anti-vehicle role. The average battle-rating is too high and the penetration value of the AP shells to low. While it does have increased armour compared to earlier models, it is still not strong enough against the devastating tank HE shells. However the armour performs well versus the average aircraft armament. Thankfully the fuzes of most APHE shells coming at you are not very sensitive, rendering the HE content useless and the entire shell into a mere AP solid shot. The damage can still destroy major components and render you immobile for more shots.

Tactics

With the dual 40mm Bofors the TGMC has an excellent tool versus bombers and armoured attackers. The ammo is limited though. Reserve the fire for certain hits. Against fighters the same tactic should be applied.

Specific enemies worth noting

Counter-tactics

Pros and cons

Pros:

  • Heavy anti-air fire power.
  • Good effect on aircraft if 40 mm HE shells hit.
  • Good mobility.

Cons:

  • Open top, exposing loaders and gunners.
  • Compared to some other SPAA's at the rank, poor anti-vehicle performance.
  • Little armour.
  • Decreased mobility off-road.

Specifications

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Armaments

2 x 40 mm M2 Cannon
  • Ammunition Capacity: 352 Shells (8 rounds magazine each gun)
  • Fire Rate: 120 rounds per minute
  • Gun Depression: -5°
  • Gun Elevation: 85°
  • Turret Rotation Speed: 23.8°/s (Stock), 32.9°/s (Upgraded), 40°/s (Prior + Full Crew), 44.2°/s (Prior + Expert Qualif.), 47°/s (Prior + Ace Qualif.)
  • Reloading Rate: 0.65s (Stock), 0.58s (Full Crew), 0.53s (Prior + Expert Qualif.), 0.5s (Prior + Ace Qualif.)
2 x 40 mm M2 Cannon
  • Ammunition Capacity: 352 Shells (8 rounds magazine each gun)
  • Gun Depression: -5°
  • Gun Elevation: 85°
  • Fire Rate: 120 rounds per minute
  • Turret Rotation Speed: 23.8°/s (Stock), 28°/s (Upgraded), 34°/s (Prior + Full Crew), 37.6°/s (Prior + Expert Qualif.), 40°/s (Prior + Ace Qualif.)
  • Reloading Rate: 0.65s (Stock), 0.58s (Full Crew), 0.53s (Prior + Expert Qualif.), 0.5s (Prior + Ace Qualif.)
2 x 40 mm M2 Cannon
  • Ammunition Capacity: 352 Shells (8 rounds magazine each gun)
  • Gun Depression: -5°
  • Gun Elevation: 85°
  • Fire Rate: 120 rounds per minute
  • Turret Rotation Speed: 23.8°/s (Stock), 28°/s (Upgraded), 34°/s (Prior + Full Crew), 37.6°/s (Prior + Expert Qualif.), 40°/s (Prior + Ace Qualif.)
  • Reloading Rate: 0.65s (Stock), 0.58s (Full Crew), 0.53s (Prior + Expert Qualif.), 0.5s (Prior + Ace Qualif.)

Ammunition

Ammunition Penetration in mm @ 90° Type of
warhead
Velocity
in m/s
Projectile
Mass in kg
Fuse delay
in m:
Fuse sensitivity
in mm:
Explosive Mass in
TNT equivalent
in g:
Normalization At 30°
from horizontal:
Ricochet:
10m 100m 500m 1000m 1500m 2000m 0% 50% 100%
Mk.II 3 3 3 3 3 3 HEFI-T* 874 0.86 0.2 0.1 63 +0° 79° 80° 81°
M81A1 76 74 62 45 33 24 AP-T 874 0.88 N/A N/A N/A -1° 47° 60° 65°

Belt types

Belts Shell composition Combat usage
Default AP-T / HEFI-T* These work fine, a hit on an aircraft means certain death for it and still is able to hurt ground vehicles, especially if it is side into the side of a enemy tank. These seem like a good I don't know what i will run into belt.
Mk.II HEFI-T* These mean certain death for aircraft, what should be used for AA work.
M81A1 AP-T These are the worst belts against airplanes. however, they are able to hurt ground vehicles especially if it is side into the side of a enemy tank. If you plan on killing tanks load this and flank, since side shots are almost a necessity.

Ammo racks

Ammo racks of the M19.
Ammo
Part
Full
ammo
1st
rack empty
2nd
rack empty
3rd
rack empty
4th
rack empty
5th
rack empty
6th
rack empty
7th
rack empty
8th
rack empty
9th
rack empty
10th
rack empty
11th
rack empty
Recommendations Visual
discrepancy
Magazines
Rounds
44
352
22 (+22)
176 (+176)
20 (+24)
160 (+192)
18 (+26)
144 (+208)
16 (+28)
128 (+224)
14 (+30)
112 (+240)
12 (+32)
96 (+256)
10 (+34)
80 (+272)
(+36)
64 (+288)
(+38)
48 (+304)
(+40)
32 (+320)
(+42)
16 (+336)
Keep full   Yes

Notes:

  • There are 8 rounds loaded into each magazine. The second row merely translate the number of magazine into the number of rounds.

Crew

  • Commander
  • Gunner
  • Loader 1
  • Loader 2
  • Machine gunner
  • Driver

Total: 6 Crew members

Armour

Armour type:

  • Rolled homogeneous armour
Armour Front (Slope armour) Sides Rear Roof
Hull 12.7 mm (59°) 12.7 mm 12.7 mm 12.7 mm
Turret 12.7 mm 8 mm 8 mm N/A

Notes:

  • Suspension wheels and tracks are 10 mm thick.

Engine & mobility

Weight: 17.5 ton

Max Speed: 61 km/h
Stock

  • Engine Power: 420 hp @ 3199 rpm
  • Power-to-Weight Ratio: 24.00 hp/ton
  • Maximum Inclination: 32°

Upgraded

  • Engine Power: 518 hp @ 3199 rpm
  • Power-to-Weight Ratio: 29.60 hp/ton
  • Maximum Inclination: 41°
Weight: 17.5 ton

Max Speed: 56 km/h
Stock

  • Engine Power: 262 hp @ 3199 rpm
  • Power-to-Weight Ratio: 14.97 hp/ton
  • Maximum Inclination: 34°

Upgraded

  • Engine Power: 296 hp @ 3199 rpm
  • Power-to-Weight Ratio: 16.91 hp/ton
  • Maximum Inclination: 40°
Weight: 17.5 ton

Max Speed: 56 km/h
Stock

  • Engine Power: 262 hp @ 3199 rpm
  • Power-to-Weight Ratio: 14.97 hp/ton
  • Maximum Inclination: 34°

Upgraded

  • Engine Power: 296 hp @ 3199 rpm
  • Power-to-Weight Ratio: 16.91 hp/ton
  • Maximum Inclination: 40°

Modules and improvements

The 40mm Bofors come with a very annoying stock belt a mix of AP and HE. Always vasting 50% of the clip in anti-vehicle, or anti-aircraft role. "Mk.II" ammo should be the first stop. The next important unlocks are "Parts", "Turret Drive" and "FPE". Mobility upgrades are not really necessary for a stationary AA. The rest can be unlocked at leisure.

History of creation and combat usage

Development

The development of this vehicle began from the T65 project. The T65 was classified as the 40 mm Gun Motor Carriage T65 and was based off the chassis of the M5 Stuart as requested by US Army Armored Force for a light anti-aircraft vehicle. The T65 was a successful vehicle and went on for about 1,000 units produced, however it stopped because the production line for the Stuart chassis was phased out as well. As a replacement, the Armored Force peered into the new light tank entering production, the M24 Chaffee, as the basis of their new light anti-aircraft vehicle. This project was called the T65E1 and was being developed at the same time with the M24 (still in development as the T24). The layout for the T65E1 on the new chassis was similar to the one used with the Stuart's chassis, with the gun turret at the rear and engine at the middle, and only a few changes were made like changing the original vertical gun shield into an angular one.

The T65E1 was accepted in May 1944 and designated as the Twin Gun Motor Carriage M19. An order of 904 of these vehicles were sent to Cadillac, but production didn't start until August and the factory was only able to make 285 units before the war ended due to diversion in parts to creating full M24 Chaffees. An upgrade made during its production life was designated the M19A1 and had an auxiliary engine and generator to operate the 40 mm cannons in case the main engine is disabled, plus an extra compartment to hold two spare barrels for the gun should they be damaged or overheated.

Combat usage

The M19 TGMCs that were produced were sent to Europe and used by the US Army. However, by the time the M19 was available for use, the German Luftwaffe had been decimated by the Allied air superiority, thus the M19 use as an anti-aircraft gun has been diminished greatly. The M19, like its many anti-aircraft vehicle designs made before it, found great service as an assault gun, where its 40 mm twin cannons can deliver much more firepower than its predecessors with either only .50 caliber machine guns (M16 MGMC), or a 37 mm autocannon (M15 CGMC). The M19 was never exported to America's allies in the Lend-Lease Act, and not even after the war with the Military Aid Program. Despite that, the M19 still saw use in America up to the Korean War for nearly the same purposes it was given for in World War II as a ground support weapon. It was used as a defensive turret against charging North Korean and Chinese forces when they try to overrun infantry positions, to which it served with devastating effect. Its effect against enemy aircraft is dubious during the war.

When the M24 Chaffee and its chassis derivatives were finally phased out of service in 1956 for newer tanks in production, the M19 was no exception. However, the M19 40 mm turrets were removed from the chassis and was simply put onto the next light tank chassis that was to take over the role the M24 Chaffee was built for. This light tank was the M41 Walker Bulldog and the M19 turret-mounted chassis was named the M42 Duster.

Screenshots and fan art

Skins and camouflages for the M19 Twin Gun Motor Carriage from live.warthunder.com.

Additional information (links)

References


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us_m19.png

Icon-country-usa.png M19
Nation USA
Type SPAA
Rank 4
Battle Rating
5.0
5.0
5.0

   Metric✓       Imperial   

   Metric       Imperial✓   

Characteristics
Weight
17,500 kg
38,580 lb
Number of Crew 6
Hull armour thickness
12.7/12.7/12.7/12.7 mm
0.5/0.5/0.5/0.5 inches
Statistics
Engine power (stock)
420 hp
262 hp
262 hp
Engine power (upgraded)
518 hp
296 hp
296 hp
HP/ton ratio (stock)
24.00
24.38
14.97
15.21
14.97
15.21
HP/ton ratio (Upgraded)
29.60
30.07
16.91
17.19
16.91
17.19
Max speed
61 km/h
38 mph
56 km/h
35 mph
56 km/h
35 mph
Main Weapon
2 x 40 mm Bofors Autocannon
Ammo stowage 352 rounds
Vertical guidance -5°/85°
Economy
Required RP 46,000 RP
Vehicle cost 170,000 SL
Crew training cost 49,000 SL
Max repair cost*
3,400 SL
1,110 SL
1,760 SL
Free repair time (Stock)
2d 10h
3d 01h
3d 10h
Free repair time (Upgraded)
19h 31m
1d
1d 03h
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