Today's entry in the Halo 3 Weapons Guide is the Spiker, a dual-wieldable weapon of Brute origin.

Clip size: 40
max capacity (not dual wielding): 160
rate of fire: ~8 rounds per second
Rounds to kill(body): 14
Rounds to kill (head): 14
Rounds before melee kill: 5
Rounds before close frag nade kill(body): 4
Rounds after close frag nade to kill(body): 4
Rounds before far frag nade kill(body): 8
Rounds after far frag nade to kill(body): 8

Notes: The spiker is the gun that burst firing forgot. Whether pulsing the trigger or holding the trigger down, the rate of fire and accuracy remain the same. This gun fires slowly, but is suprisingly good at range and very effective at close quarters as well. It is nearly as verstile as the assault rifle. Dual wielding, of course, negatively effects accuraccy.

For demonstrations of the spiker's range and killing abilities, see the following short films:

Spiker range demonstration
Spiker kill demonstration