most knife shop/gun dealers dont know the laws either. One gun dealer tried telling me, that it was illegal to buy/sell bull barrelled rifles in Ca. Another one told me, that I couldnt own more than 50 rounds of hollow point pistol ammo at any one time. So dont take them at their word, my experience is, they are usually wrong. The best one I got though, was I got told they didnt carry more than 1lb kegs of gun powder because people could use them as a bomb, so it was illegal to sell them.