Apparently a 12 Gauge pistol exists. Imagine the recoil!
This shotgun handgun or whatever you want to call it was designed for Special Forces in Russia. Its giant cylinder holds five 2.75" 12 gauge shotgun shells. Unloaded the handgun weighs 5.5 lbs! There have been many homemade variations over the years, but this one, which was confiscated off a drug dealer in 2011, is our favorite. Imaging shooting this weapon!
Here's another photo showing its massive size next to an average size pistol.
This particular 12-gauge pistol was confiscated off a Brazilian drug dealer in 2011, along with the contraband shown in the photo above.