The bolt is pulled back, and the striker is hung on the iron block. Then the bolt pushes the bullet forward into the chamber, pulls the trigger, and the spring tells the striker to push forward and hit the bottom fire of the bullet.

Structural schematic diagram:

Shooting process: 1. In the process of pulling the bolt backward, the spring in the bolt is compressed, and the elastic potential energy is stored to make the firing pin in a ready state.

2. If it is Mao Se style and Mosinnagan style, it is stuck when the bolt handle is screwed up and pulled back; If it is Li En Field type, the firing pin will get stuck when the bolt handle is pushed back and rotated downwards.

3. After the bolt is pushed back and turned down, the mechanism that the bolt itself hinders the extension of the spring of the striker is cancelled, but the resistance iron connected with the trigger blocks the striker so that the spring can not be relaxed and remains compressed, and the whole bolt is still in a ready state.

4. The forward push of the bolt also pushes the bullet out of the magazine/magazine, and the bullet briefly passes through the magazine and enters the chamber behind the barrel. At the same time, when the bolt rotates, the locking ear of the bolt head buckles the groove in front of the magazine to fix it, and the rear of the barrel is completely closed.

5. After pulling the trigger, the iron blocking the firing pin is released, and the spring in the bolt is released, which drives the firing pin to hit the primer of the bullet forward and ignite the propellant in the shell.

6. The warhead is propelled by the high-pressure expansion gas generated by the violent combustion of gunpowder, separated from the shell and flies forward along the gun bore; The shell was blocked by the chamber and was left in the gun. When the bolt was pulled open again, it was pulled by the extraction hook to slide out of the chamber, and then it was thrown against the shell and ejected out of the gun. One round of shooting is complete.