T10E1 GMC: The Super M16

Would you like the T10E1 GMC to be added to the game?
  • Yes
  • No

0 voters

How should it be added?
  • Tech Tree
  • Premium
  • Event
  • Battlepass
  • Squadron
  • I said no

0 voters

What BR should it have?
  • 2.7
  • 3.0
  • 3.3
  • 3.7
  • Other (comment)
  • I said no

0 voters

T10E1 GMC: The Super M16


By the later stages of WWII, it was clear that something new was needed for mobile air defense. The US Army had been using the M13, M15, and M16 half-track systems for SPAAGs, but as newer and better enemies were faced, new ideas needed to be tested. Many prototype anti-air vehicles were developed and tested by the US during and after the war, but one in particular came very close to full production and service. The T10E1 GMC (Gun Motor Carriage) was a further development of the M13 and M16 GMC lineage. Initially the program was started as the T10 which was based on the M2 half-track car. This was deemed unsatisfactory however and the project was moved to the larger and more robust M3 half-track. The armament consisted of a Maxson M45 Quadmount repurposed to hold a pair of 20mm Hispano-Suiza HS.404 autocannons. This would dramatically improve the firepower of mobile anti-air units, and so in March of 1944 the White Motor Company was contracted for production of prototypes. They were built from existing M16 MGMCs, with 110 in total being converted. They would not move beyond the testing phase, however, and eventually all but one would be converted back into M16 MGMCs. The last T10E1 was retained as a historical piece at Aberdeen Proving Grounds. Interestingly, a similar development would see major use in Israel. Known as the TCM-20, it would become the primary anti-air artillery of Israel until the M163 Vulcan. The TCM-20 was exactly what this attempted to be, with an M45 mount holding two HS.404 autocannons. It was used on multiple self-propelled mounts (M3, BTR-152, RAM V-1) as well as a static towed mount. Perhaps this inspired the development of the TCM-20 system?


The T10E1 is essentially an M16 but with a pair of 20mm HS.404 autocannons as the armament instead of four M2HB .50 caliber machine guns. These reload more often and you only have two of them, but they have much greater range, can fire slightly faster, and pack a heavier punch. Other than that they remain identical. Specifically, the model of gun is the Mark IV, and the mount they are in was designated T17E1. Turret rotation was fully electric, as was elevation. Sighting was provided by a Reflex Sight Mk. 9. Unfortunately, this means there will be no zoom ability, and the sights will be fixed.



Main Armament: 2x 20mm Hispano Mark IV Autocannons

Armor: 13mm (Windshield Covers), 6.4mm (Everywhere Else)

Ammo Count: 3000 Rounds

Engine: White 160AX Inline-6 Gasoline, 147HP

Transmission: Spicer 3461, 4 forward 1 reverse

Top Speed: 72 km/h (45 mph) on-road

Gun Movement: 360 degrees traverse @ 60 degrees/second, +90/-10 elevation/depression (all electric)

Sights: Reflex Sight Mk.9

Crew: 5 (Driver, Co-Driver, Commander, Gunner, Loader)



If there is anything I have missed or gotten incorrect, please let me know! I hope you enjoyed reading this, and I hope you will also check out my other suggestions! Thanks, and have a great day.



M3 half-track - Wikipedia

Twin 20mm GMC T10E1

Twin 20mm Gun Motor Carriage T10E1

Twin 20mm Gun Motor Carriage, T10E1 | FirearmCentral Wiki | Fandom


How is this different in performance from the TCM-20 to warrant any of the BRs in the poll though?

1 Like


Would be an interesting variations to the US halftracks. However it needs to be the same BR as TCM-20.

My thoughts exactly, the TCM-20 is 4.3, while the highest suggested BR for the T10E1 is at 3.7.

Both the T10E1 and the TCM-20 is using 2x 20mm Hispano as their weapons and are both based on the M3 Half-Track. They should have more or less the same performance.


Hmmm Super M16 I interesting, if you’re wondering why I said Super M16 it is because the Dillon Aero modified an M45 quad mount with 4 M134 7.62 rotary machine guns and if it was mounted onto a M16 chassis i would call it the Super M16 II.

I wrote this suggestion before the TCM-20 was added and I simply didn’t go back and change the polls. Unless there’s a seriously good reason for it, I don’t like messing with polls as that can screw up existing results. If you’d like to vote 4.3, just select “other”.

Why should the TCM-20 be that high anyway? AEC AA is 3.3, has 2x 20mm and actually has armour. Crusader AA Mk. II is 4.0, has 2x 20mm and actually has armour.

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The 404s provide over 50% better fire rate than the Oerlikons

Wirbelwind has a higher rate of fire due to having more guns.

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