PCP or PreCompressed Pneumatic Airguns
PCP-arigun source of power is compressed air, which is stored in the air reservoir, either by pumping or from scuba bottle filling. Air reservoir filling pressure is typically 200 bar. They are safe when used correctly, in spite of the high operating pressure. The advantages achieved by dozens of shots at with one fill, smooth output speeds (REGULATED models), as well as non recoil shots.
Mentioned features the PCP-airguns are ideal for precision shooting, they are pleasant to shoot and hobby is easy to start.