Double Trigger? I don't know of a modern handgun that has a double trigger. Do you mean a trigger that has two definitive feels to it: the pre-travel followed by the release? If so, there is a major company that makes striker fired DAO pistols which have a trigger that feels very similar to a very good double action revolver, only better. Kahr Arms is the company. I don't know of any .22LR pistols that have triggers like the common striker fired centerfires.
Perhaps someone can chime in and offer some more info on this one.