C-20A rifle

The C-20A Canister Rifle was featured in early builds of StarCraft: Ghost, replacing the C-10 Canister Rifle as the standard issue weapon for Ghosts. It was later replaced in functionality by the AGR-14 and its appearance seemingly forming the basis of the Submachine Gun. It had three main functions; sniper, grenade launcher and assault rifle.
 * Sniper Mode: By attaching a scope, the C-20A effectively becomes a sniper rifle. It gives info on the target such as health, range and whether they can be locked down.
 * Assault Rifle Mode: Effective at close range, it emits little sound and has 24 bullets to a magazine.
 * Grenade Launcher: The C-20A, when set to this mode, can fire a variety of grenades;


 * EMP Grenade: Disables enemy shields.
 * Flash Grenade: Used for stunning enemies.
 * Hellfire Grenade: Breaks up into numerous pieces that track heat sources and then explode.
 * Irradiate Grenade: Emits powerful radiation that is extremely deadly to living organisms.
 * Lockdown Grenade: Disable mechanical units and structures.
 * Sticky Grenade: 'Sticks' to enemies or surfaces before detonating.

Because the C-20A appears only in early builds of StarCraft: Ghost, not to mention that the C-10 is still used by Ghosts in StarCraft II, it is of dubious canonity.