The plenum in an airgun is the chamber of compressed air located between the regulator and the valve.
The regulated air it contains is released when the trigger is pulled. The air then rushes through the valve opening and propels the pellet or slug down the barrel.
The combination of pressure and volume of air released is a the key factor in achieving power in a PCP air rifle. Generally-speaking, the larger the plenum, the more power can be generated by the airgun.
FX Impact MKII with Power Plenum kit Benefits:
1. Higher velocities can be obtained. For instance, the standard .22 caliber FX Impact previously achieved 32 Ft/Lbss. of muzzle energy with standard pellets. With the FX Power Plenum added to the .22 caliber Impact, though tuned from the factory to still shoot at 32 Ft/Lbs, you can now adjust the gun and shoot heavier slugs and obtain as high as 60 Ft/Lbs of Muzzle Energy.
2. Lower velocities still available. While the higher powers are now achievable, often shooters want lower power to for different shooting situations (or to simply extend shot count). Thanks to the internal part changes to the Impact, the lower velocities can still be achieved.
3. Increased shot count per fill. With the FX Power Plenum, the 75 shots per fill that the standard tuned .25 caliber Impact previously achieved, is now increased to 110 shots per fill. That’s just one example.
4. Lower regulator pressure required. You get the same velocity result with lower regulator pressure due to the FX Power Plenum. Lower pressure will also result in less wear and tear maintenance to your rifle
Power plenum comes with all the parts on photo, BUT no instruction you need to understand how PCP rifles work and have the skills to mount it correct, we dont have any instruction for the kit
And is mounted on own Risk