There’s no governing body proclaiming this the world’s smallest crossbow, but it’s only slightly larger than a full-sized crossbow arrow so it’s got to be up there. Joerg designed this crossbow to be safe. The arrow is fully encapsulated so it won’t accidentally shoot off in an unexpected direction.
A man accidentally brought his loaded .40 calibre gun onto the aeroplane. He didn’t know he had it. Neither did the TSA, who completely missed it during its scan and allowed it to be brought onboard. Apparently, this happens a lot.