I picked up 3 Greek RG's from the CMP a couple months ago. Yesterday I just got around to trying out a 1955 HRA and was rather supprised to discover it is firing in full auto. It let out a burst of 3 rounds. It stopped firing when I let go of the trigger, so I don't think it's a stuck firing pin issue. Anyone have any ideas on what it could be? I'm guessing a worn trigger group part, but I'm far from an expert in these things.