If you're going to use any injectable gear, then of course you're going to need some "darts." You can pick up syringes at your local pharmacy unless your state has certain restrictions. Also, you can purchase needles online. Just do a little searching around and you'll find several places that'll hook you up. Syringes will run you around 50 cents apiece. Note that it'll be more difficult to obtain needles (at least from the larger, more "legit" companies) if you live in California and Illinois. You'll usually need a doctor's prescription in those states. Still, if you look around enough, you can get what you need.
THANK YOU!! I fucking irks me to no end when I see someone spewing off nostalgic vitriol about how the Edwardian era and the 1950s was some sort of heaven on earth for those of the penis-posessing variety. IT WAS NOT. In fact it was far from it. Want to talk about gender roles? How about the MALE gender roles. Men were regulated to cannon fodder who were obligated to lay down their lives in the trenches of France and Belgium during WW1 because their respective European emperors told them to because of a bitchfest that was simmering with the other European emperors. Ditto for the Vietnam war 50 years later. And a few years earlier they were obligated to freeze to death in the Atlantic ocean as the Titanic sank under them because the life of a man was apparently less valuble than that of a woman or child.