The Heavy Bolter is a heavy variant of the Bolter weapon wielded by the forces of the Imperium of Man.
Unlike other Bolt weapons, the Heavy Bolter uses a much larger 1.00 calibre round and is in common use by almost all of the Imperium's martial forces. It has a high rate of fire, long range, is inexpensive to manufacture, and tolerant of mistreatment by inexperienced users. It is equipped on tanks and a variety of vehicles as an anti-infantry (AI) weapon as well as on fixed defenses.
In Dark Millenium it can be wielded by Space Marines.