Wash. case on sentencing & arms rights
There's an interesting string of Washington cases under discussion at the Volokh Conspiracy. Basically, the courts read the statutes on sentencing enhancement for armed crime, in combination with the state right to bear arms, as requiring that the arms be accessible and have some connection to the crime.
Also in comments an amusing note on weapony. The court or perhaps the legislature lists "weapons," as including "slingshots." My guess is that the listing came about this way: 19th century lists of weapons (for purposes of bans on concealed carry, usually) often included the "slung shot." This was a term for the "blackjack," a flexible short club with lead in its end (or a homemade one --something heavy in a sock).
I suspect whoever was drawing up the modern list got one or more of those century-old ones, wondered what this "slung shot" was, and figured it must be a typo, or an antiquated term, for a sling shot.