In this Comparison Video I go through the benefits and shortcomings of CO2, Spring Piston and Pump Airguns. I focus mainly on Airguns but there is a bit of a crossover with Airsoft guns. All three systems (CO2, Spring, Pump) create pressure that forces the ammunition with a high force out of the barrel. Similar to how gun powder is the source of energy for a bullet. Read full article here: https://www.replicaairguns.com/2014/3/6/co2-versus-spring-versus-pump-airgun-comparison.html