DaveH,
Don't give up on this POS, or he wins.
If it is illegal for him to possess such a knife as a minor, and his parents knowingly allow him to keep it, maybe a call to the Florida DCFS is in order. With the bad PR the DCFS garnered recently for losing that kid, I'm sure they'd be all over this. Let's see, child endangerment, contributing to the delinquency of a minor, neglect, use of a minor in a fraudulent act, aiding and abetting, ect. Maybe they'd find a good home for him.