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R2DA Wiki

"The M1A1 Thompson capable of bringing flashbacks from the previous R2D game."


The M1A1 Thompson is great at tearing down hordes and having the ability to continuously fire for a while without having to reload. Having somewhat decent accuracy, good damage and being automatic makes this gun a great pick-up for any survivor. Be careful, for it does chew through ammo pretty quick, so try not to miss too many shots.

If you like having the ability to kill multiple targets without having to reload, then this is the weapon for you.

Background Story

In the olden times of the apocalypse, there was a distinct lack of automatic weapons. Yes, there was, at the time, the Minigun and the Skorpion, but none considered them as true automatics. Behold, the M1A1 Thompson, a staple of the World War Sequel made none other than the renowned manufacturer R-Brain Hardwork. Hopes were up, prices affordable: this marked the return of iconic firearm and the boom of automatic weaponry.

When the time came for the weapon to get in the publics' hands, it was soon realized that there were changes made to its magazine size, bullets, and fire rate; seemingly diverting from the original model. Although it did receive negative first-impressions from purists, it turned out that it made the weapon easier to handle. There were things to criticise about R-Brain Hardwork's lack of communication, but they surely knew what they were doing, and since then, manufactured more automatic weaponry, as its success was beyond the company's expectations. Without the Thompson, the market for guns definitely wouldn't be as diverse as it is now; an 82-year old gun, being a veteran of automatics, ironically saves the demand for this type of gun. Outstanding.


  • The fire rate can be slow, so aim at the head to be efficient.
    • Take advantage of the firerate, you won't instantly chew through ammo.
  • Don't bother tap firing. It's the same thing as going fully automatic.
  • While ADS'ing, mind the recoil. Pull down to compensate.
  • You can bring armor, such as the Bulldozer I or the Bulldozer II, and you will have 3 mags, which will make the gun's ammo last longer.
    • You can also buy the Drum Mag to have 15 additional ammo, but it will decrease accuracy slightly.
      • This can be compensated with crouching and ADS'ing..
      • It's recommended to buy this attachment, so long you do not care about accuracy or shooting from long ranges.
  • Use the Ironsights attachment, which is supplied on purchase, as it makes the gun slightly more accurate.
    • It can compensate for the accuracy reduction of the Drum Mag.
  • This gun can be considered a slower version of the AK-47.
    • This weapon is better than the AK-47 on Boss rounds because of its higher ammo capacity with the Drum Mag attachment and higher total damage compared with the AK-47.


  • High Total Damage
  • High Damage per Magazine
  • Automatic
  • Low Ranked
  • Cheap


  • Low Reserve Ammo
  • Low Accuracy



  • v1.1.3
    • Price changed from 25,000$ to 18,000$.
    • Rank changed from 11 to 10.
  • v1.1.4
    • Price changed from 18,000$ to 21,000$.
    • Rank changed from 10 to 12.
    • Ammo was changed from 30/1 to 25/1.
    • Reloading sounds added.
  • v1.4.0
    • Rank changed from 12 to 15.
  • v1.4.8
    • Accuracy changed from 50 to 70.

  • This is a returning weapon from R2D 2014.
  • This is the first World War era weapon, the second being the Luger P08.
  • The reload animation is similar to the M16A1's animation.
  • Compared to the M4A1 and the Kalashnikova, this fires slightly slower.
  • This is the subject of a video of how R2DA meshes are being made.
  • In real life, the M1A1 Thompson is surprisingly accurate compared to the display shown in-game.
  • In real life, the M1A1 Thompson fires faster than what is portrayed in game, at about 700 RPM.
  • Drum magazines were not used for the M1A1 variant of the Thompson.
    • Drum magazines were dropped for 30-round stick magazines due to their tendency to jam and rattle, which wasn't suitable for war use.
    • The drum magazines were only used on the original M1 models.
    • Even so, it would be unusual for a different magazine to decrease accuracy.