As with many things in bodybuilding, things are not always as they appear. While esterfied AAS have often been labeled as worthless among the inexperienced, those who have used them to generate substantial and long-standing gains in muscle size know better. Unfortunately, one can’t use minimal quantities of injectables AAS and expect to experience dramatic improvements in local growth. If we accept the fascial stretching theory as valid (this theory has not yet been validated in the medical community or in any respected clinical setting), we can logically conclude that small amounts of oil simply won’t elicit a great enough stretch on the muscle fascia to cause substantial growth.
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.