All these pistols are powered by a CO2 capsule. CO2 powered pistols are very easy to use as there is no need to compress a spring to fire them. These pistols are relatively low powered and therefore ideal for fun plinking and indoor target shooting.
Specially formulated to keep the seals on high pressure CO2 gas guns maleable and efficient. Very useful if you are firing large amounts of shots - put a couple of drops onto the CO2 capsule seal to ensure they do not become brittle and cause the gun to leak.