Note: A degree of overlap may be present, but to prevent model speculation, information pertaining to early C-10s has been grouped into the same section. Time separation is still present however.
The C-10 was in use by 2491 and a relatively obscure weapon at this time. These models were capable of firing lockdown and explosive rounds.
By 2499, the C-10 mainly fired 25mm high explosive rounds. This version was also equipped with a special underslung low frequency targeting laser that was used to guide tactical nuclear missiles to their target with pinpoint accuracy. It was also capable of using a variety of special munitions, including lockdown rounds that temporarily disabled mechanized units caught within the blast.
Although the Mk. VI is unwieldy in the hands of others, ghosts are able to use it as both an automatic weapon and as an anti-personnel sniper rifle, capable of a one-shot kill.
The weapon fires 25mm antipersonnel rounds. These rounds appear to be charged with energy instead of relying purely on conventional explosives and have the power to destroy siege tanks from the inside. The Mk. VI is also equipped with a flashlight, can fire EMP rounds that punch through shields and deplete energy sources, lockdown rounds, and has retained the low frequency targeting laser that is used to guide tactical nuclear missiles and now drop pods to their intended destination. The accuracy of ghosts has improved thanks to the Mk. VI containing a magnetic grid tracker to verify coordinates. These rifles are augmented with recoil absorption for accurate follow-up shots, an automatic aim compensation module that compensates for wind speed, gravity and the Coriolis effect, and sixteen sound-suppressing baffles. Ghost trainees of the Terran Dominion are expected to be able to strip and reassemble Mk. VI C-10 rifles in a minute and a half.
By 2511, new ammunition for the C-10 had been developed that allows the rifle to pierce zerg armor at greater ranges.