The softgun is a fictional 12 gauge shotgun pistol used by powered armor soldiers against non armored targets.
It has bones and can be animated.
The weapon can hold 3+1 shells, as seen here.
To load the weapon, the user must press the button located on the left side of the gun to drop the loading mechanism. The mechanism holds one 12 gauge shell at a time and is pushed back into the handle to load the shell.
A video of the mechanism functioning.
The shells are ejected from a door on the right side of the gun.
The weapon also has an animated spring!