I reckon........

REAL air pistols are exactly what it says.
Pellets/BB's are pushed by air, not any other medium.

My Baikal 53M is, so is my Gamo Falcon, so is my Gamo Compact. (I might as well throw the G10, but it also qualifies)

None of my Co2 pistols are REAL air pistols, they are weaker "toys" as Andy used to say.....

But I reckon my EB22 could be an honourary one as it's nearly at full power and has got a nice kick

Russ