Past
1. The old gun bullet's motion by the gun powder caused smoke.
2. The old gun used a bullet that is different from the sphere of current ammo.
3. The way to shoot the gun was closer than the one in the present.
4. It’s precision was less than the current guns.
5. Power on the destruction of guns in the past was less violence guns today.
Present
1. The current the gun is a portable power.
2.The gun are described by their diameter of bullet as 7.5 mm. and 3.57mm.
3. There are several types of gun such as Muzzle, bolt, resolver, semi – automatic and automatic.
4. The gun has modern body shape are comfortable. Some of type guns are silence too.
5. The power of damage and destroy of guns are severe and move stronger than older ones.
Future
1. Gun in the future will be controlled by computer. It can even be ordered by remote from opposite hemisphere.
2. The targeting computer will be able to calculate the target it self, even behind walls or in a shelter.
3. It will have lighter weight and will be able to held with one hand.
4. It will have the power to destroy and laser power or nuclear power may be in used.
5. It will be able to identify targets accurately and precisely without error by yourself by receiving signals from satellites.