At the time of the shot produced in the conventional piston carbine, the release of the spring activates the piston and its movement compresses the air. This causes the pellet to be projected through the barrel. As a consequence, a vibration is generated that is transmitted to the entire carbine and this results in a less effective and less accurate shot compared to PCP guns.
Explanation of the operation of the carbine
When the trigger is pulled, the spring push allows the hammer to proceed with a stroke. This causes the valve to open (Figure 1).
When the valve is open, the air from its reservoir is transferred to the plenum until it reaches the transfer port. Finally, the projectile will be fired out of the barrel (Figure 2).
The process of conventional carbines with the gas piston system is the same as the spring system, but the difference is that the spring is non-existent, that is, it is not used since the use of pre-compressed air dominates.
In those where the air is pre-compressed, the release is through a transfer port, and when the shot is generated, the spring that is released is usually 3% of that used in conventional carbines.
The big difference between conventional and PCP is the lack of movement in the PCP. That is, the shot is much more accurate.
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