Quad Barrel Shotgun
From MediaWiki

Used in the most dire of circumstances, Optimus Prime can use the Quad Barrel Shotgun (クアッドバレルショットガン Kuaddo Bareru Shottogan) to mow down his foes with relative ease.
Fiction
The Last Knight film
Toys
Generations

- Released during the course of Studio Series, the Quad Barrel Shotgun is a redeco of one of Age of Extinction: Generations Hound's, utilizing the color scheme in the film. It was given away for free by TakaraTomy if 4000 yen of Transformers products were bought from select stores starting on April 21 while supplies lasted.
Trivia
- Optimus's shotgun in the film seems to be a retextured CG model of Hound's shotguns, similar to the aforementioned toy, with a red and blue flame aesthetic keeping in line with Optimus's paint job.
- The Quad Barrel Shotgun is possibly a reformatted version of Optimus's Ion Blaster or Barrage Cannon. Unlike in the previous films, however, the weapon seems to be stored in Optimus's forearm rather than in his back.


