From Halopedia, the Halo wiki
The Cindershot was manufactured and developed by Ferrarius Assembler Vats. The Cindershot fires ionized particle grenades, which explode seconds after launching, damaging anything caught in its explosion.
When reloading, the front of the Cindershot is pulled back, allowing more hard-light grenades to move to the front of the ibarrel, before it snaps back to its original position.
The Cindershot is a hardlight grenade launcher that serves a similar role to that of the Tufasumo-pattern plasma caster, but its explosion pulls in targets in close proximity. The Cindershot has alt-fire mode that allows the projectile to follow the wielder's direction. The Cindershot is capable of killing a Spartan in 2 direct explosions.
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