Stamp up your bullet / Firearms

The bullet is usually fired when the firing pin of firearms hits the primer to result in explosion in the bullet shell and motivate the primer. This design integrates the principle of two-dimensional code and the method of seal into the pistol's firing pin, two-dimensional code on the firing pin will be printed
on the primer of the bullet at the right moment when the firing pin is hitting against the primer, and the two-dimensional code on the firing pin of each firearm is unique. Both two-dimensional code and the information of the firearm holder are recorded at the National Firearms Administration.