I found some on amazon, at 40 cents a pop! Quite cheap, but they certainly do the job.
I made an experimental pistol with my idea of how to shoot them. Toothbrush heads to hold them in place, extremely prestretched rubber and a "pinching" method to keep the backside firmly on the string.
This works quite well, the darts fly 15 meters without any problems. They stick into anything they hit - wood, aluminum, plastic.
I think this can be optimized for more compact sizes, and probably with a pump action mechanism. I had to add string guides and work with the ideal string length a lot until everything worked smoothly.
The darts are not lethal I think, but a lot of fun to play with.Amazing, what 4 cm active band length can achieve! Also note that the band wear is very low, probably because there is no tapering, and the bands never touch anything.
