Halo 3/Weapons

Spartans are trained to use any weapon found on the battlefield-Human or otherwise. This training and philosophy means that resupply is always just one victory away. Efficient and deadly, Spartans often look at opposing forces as a kind of mobile weapons cache. =USNC Weapons= Gun Controls

Spartan Laser
=Covenant Weapons=

Gravity Hammer
=Grenades= You can carry a maximum of two of each grenade type at a time. Press to switch between available grenade types when not dual-wielding.

Spike Grenade
=Support weapons= Halo 3 introduces the idea of Support weapons, large weapons that require the player to be controlled in third person view. Players cannot melee, nor throw grenades while using these weapons. A turret is typically activated by pressing. A Spartan, however, is strong enough to tear off these weapons (press  while using the turret) and use them almost like rifles. When detached, these weapons have limited ammunition capacity.

Flame Thrower
=Other Weapons= These objects can be used in melee attacks. Used mostly in multi-player modes, aside from the hidden skulls in campaign mode. To pick these up, hold. To attack, press.