What is the lightest gun in the world?

Answer 1

If you just want a light weapon that projects a damaging projectile, then a blow pipe is pretty good and light.

Otherwise a small hand gun, probably of small calibre should suffice.

There are specialty guns in the form of a pen, mostly just single shot, that have their niche.

Answer 2

first get a fether...
then rip one hair of...
and den cut that hair as much times as possible .

It can even be fresh air,oxygen or co2

Answer 3

the Swiss mini gun is the smallest handgun in the world measuring at 2.16 inches long and it fires tiny bullets at 270 mph

Answer 4

Probably the Swiss Mini Gun. It is a minature revolver in 2.34 mm rimfire, which is about as big as a broken off pencil point. The revolver is about 55 mm long- just over 2 inches.