2.34mm
A small pen gun and cigarette box gun were the smallest guns used by spies and Underground Resistance warriors.
A "410" is the smallest gauge of shotgun.
410
what do you call the smallest partical that makes up all things
A gun with a laser.
The smallest part of a compound is the atom.
a gun repairer
To call shot gun means they call first at something. Ex: if kids call shot gun at an event that involves riding in a car then they are claiming the front seat.
There is no real limit (other than practicality) of the smallest gun you can own. The smallest caliber firearm I now own is a .17 HMR. The smallest physical size is a Baby Hammerless revolver from 1920. It is a .22 Short revolver that is about 4.5 inches long, and was made to fit in a vest pocket. There ARE smaller guns.
a cell
thunder gun or rpk
my friend is a doctor call him on 0402655877