What is a paintball regulator?

Answer 1

A regulator (reg for short) is a device that will regulate the outcome pressure fro the propellant tank (HPA or Co2) It is made to regulate each air "shot" mechanically by allowing less if there is a higher pressure, or allowing more air if there is not enough pressure. It can usually be adjusted to increase and decrease airflow allowed. Some are able to handle Co2, and would help consistency greatly, but some are built only to run on HPA. Some also store air, and must be discharged one or two times, even after the tank is removed.