Would you explain please.Nitro pistons are barrel break, only 1 time.
Thanks, that explains it.It is a manual break open barrel where the spring is compressed by moving the barrel downwards 90 degrees from the sight plane, thus when released, charges the air into the chamber. Not CO2. These are referred to as spring air. This type of air rifle does not hold a compressed charge of air like a pump up. The recoil is forwards as the spring is released.