I wrote that Glock's description of their system as "safe action" is a term that conveys no useful information. As for the more detailed explanation of how their system works (from your link), in the context of whether it's single-action or double-action, IMHO it still conveys no useful information.
Double-action or single-action convey no information until you have the experience with the respective firearms to know what those terms mean. The same is true here.
As for whether it’s single or double-action, I thought for your response earlier that your contention was it was neither, and I would agree. As systems are changed or developed we add terms as necessary. I don’t know that we need to force those terms onto a category of firearms that didn’t exist when the terms began to be widely used. I also don’t know whether we need to know the answer to that question in order to answer the OP’s original question.
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