E_utopia the Federal Switchblade act DOES prohibit the possession of switchblades:
§ 1243. Manufacture, sale, or possession within specific jurisdictions; penalty
Whoever, within any Territory or possession of the United States, within Indian country (as defined in section 1151 of title 18), or within the special maritime and territorial jurisdiction of the United States (as defined in section 7 of title 18), manufactures, sells, or possesses any switchblade knife, shall be fined not more than $2,000 or imprisoned not more than five years, or both.
Without going into the definition of Territory, Indian Country, special maritime jurisdiction, territorial jurisdiction of the United States etc., Federal Law DOES prohibit possession of switchblades.
This has turned into legal baloney. My thrust has been that the Massachusetts knife maker who told Jamgusmc that "6in is the legal length" in Massachusetts is wrong. Jamgusmc is hiding his "Muela Tornado.. its 71/8 in long". I don't think he has to. Call the police and ask them Jamgusmc. Get and write down the name of the Officer that gives you an answer. Memorialize the phone call by writing the officer a letter that says something like, "Pursuant to our phone conversation today, 7/4/01, I intend to begin carring my 7 1/8" bladed knife because you told me that such carry would be legal." For sa dollar or so have the post office give you a return receipt to prove the police got the letter. Keep a copy or two. The letter and return receipt would be nice to have if you are tossed about the Tornado. You of course know that carrying a 7 inch knife openly is asking to be tossed.
E_utopia, MGLA c.269 s. 10 is not my authority for my pre-emption statement, case law is. When a state has exhibited an intention to legislate a certain thing, e.g. drug possession, local ordinances or bylaws inconsistent with state law are of no effect. It is said that the local law is pre-empted by state law.
Take care,
bug