The Panzerfaust 3 is light enough to be carried and fired by one person. It can be fired from enclosures since it does not have a significant backblast; the rear of the tube, filled with plastic granulate, minimises the blast effect by the so-called "recoilless countermass principle". The booster propellant for the projectile in its tube is ignited by a bolt via a spring mechanism. Once ejected from the launcher, the projectile coasts a safe distance and then the rocket motor is ignited, boosting it to its maximum speed, after which it coasts until impact. The gunner carries at least two rounds, while the assistant grenadier carries an additional three rounds.