Open the barrel until it clicks (locking the slider).

Install the cartridge in the barrel.

Depress the upper slider and smoothly close the barrel.

Depress the lower slider and open the lower part of the card (handle) until it stops, the handle will be locked in this position.

Cock the hammer, after which you can fire by pulling the trigger.

To recharge the Card gun, proceed according to points 1-3.

To collect the Сard gun in its original position, it is necessary to depress the lower slider, and then bring the handle to the assembled state.

Kindly look at the video of the Card gun in action