Yeah, Seems like we could give them a little challenge. I mean, the basic Idea is to have a fast acting snapping claw, probably actuated by a pneumatic, unless there's something faster. As for a trigger piece, I'd probably go with a tiny switch, where when hit it fires the solenoid for the cylender. I did a bsic design of how the claw could work... What can I say, I love inventor, and I was bored...

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