I know this is an old post. I don't have a Scorpion but I've seen firing pins protrude through on pistols. It might be a firing pin that's not made quite right. I believe that is what it was on my pistol. One firing pin would protrude through the hole, the other would not. No trouble guessing which one didn't stay in the pistol.
I did not measuring of the firing pin retaining pin slot in the firing pin to see what was different, I just figured that was the cause.
I don't even know how the firing pin is retained in the Scorpion. Just saying, it may not be the fault of the firing pin blocking system.