What is 4mm bullets?

4mm bullet is a type of ammunition that is primarily used in small caliber firearms such as pocket pistols and handguns. Unlike larger caliber bullets, 4mm bullets are relatively small and lightweight, which makes them ideal for close-range shooting or self-defense situations.

These bullets are typically made of lead or other soft metals, and they can be either round or flat-nosed, depending on the manufacturer and intended use. They are also designed with different levels of velocity and muzzle energy depending on the firearm they are intended to be used with.

Some popular types of 4mm bullets include the .22 Short, .22 Long, .25 ACP, and .32 ACP. While they may not be as powerful as larger caliber bullets, they can still cause significant damage if used improperly, so it is important to use them safely and responsibly.