I wonder... actually it is not truely double action as there is no other action, single action, hammer pulling choice.
It is pull trigger as only choice. Pull trigger twice, two shots, bang-bang.
Ohhh and one other thing... a bit of an OWW after a dozen or so shots in practice. The little pistol is almost weightless and has only room for one and a half fingers on the grip. It would feel better to use the middle finger to pull the trigger, BUT that puts the index finger out past the end of the barrel which is NOT good.