They look like golden bullets, sure, but I don't care what kind of sexual deviant you are; you probably shouldn't be on the recieving end of a gun that fires vibraters. Nonetheless, Joerg Sprave has built one—caving to watcher's demands—and dubbed it the "Launcher of Love," which is suggestive in its own right.
If that's not enough innuendo for you, the little pleasure-seeking projectiles are what you might call 28mm D.I.L.D.O. (Damage Inflicting Longitudinal Destruction Object) missiles. Get ready for penetration, and a whole bunch of sexual references like that one! [YouTube]