External single fire blasters are direct plunger blasters, giving them strong firing power. No external single fire blaster but the Jolt EX-1 accepts Streamline Darts. With the exception of the Triad EX-3, all external single fire blasters are single-shot blasters and must be reloaded after each shot. Because of their direct plunger system, they are very popular for modifications; an exception to this is the Jolt, which is so small, it does not even have room for any modifications except for re-barreling and the removal of its air restrictor.