"The TC24 can fire four short range explosive projectiles before having to reload." In-Game Description.
The TC24 fires energy projectiles in a straight line which explode on impact or after a short delay. The weapon holds four shots per clip and fires much more quickly than the Technicians's Thumper. Although each shot deals less damage compared to the Thumper, the total damage of all four shots is higher, making this weapon a better choice for players who are sure of their aim.
The TC24 in practice is used much like the Plasma Gun. It fires a fairly large projectile that is easy to get midair hits with, and in comparison has a more rapid fire rate, and a fast reload. Its range however is very short, the projectiles will explode at about the same range as the shotgun projectiles disappear. This gives the Technician another option for indoor defense, as the range restriction greatly limits its usefulness outdoors.