Cyber wrist blaster

The secondary weapon of the Cybus Cybermen, the wrist blaster was a retractable mounted weapon housed within the Cyberman's forearm. It consisted of a small segmented steel gun that fired a red particle discharge that could kill a human instantly. The gun was connected to the Cyberman's vision circuits to ensure precision in aim. The wrist guns were seen, but not used during the creation of the first Cybermen. (DW: The Age of Steel) They were used during the Battle of Canary Wharf, though the guns were completely ineffective against Dalek force fields, leading to many Cyberman casualties during the battle. (DW: Doomsday)

It is likely that the blasters were ineffective against Daleks as the blaster was most likely only intended for use against humans.

In her partially converted form, Lisa Hallet could fire a blast similar to those of the wrist gun however the laser seemd to come from inside her wrist casing instead of from a mounted weapon. This variant could only stun the part of the body which it hit. (TW: Cyberwoman)

The Cyber Wrist Blaster was able to be used even if the Cyberman's arm was severed as part of the suits assimilation protocol and it could rotate. (DW: The Pandorica Opens)

A Cyberman, almost identical to the Cyberman from a parallel world, used a Cyber Wrist Blaster, though the discharge from this blaster was more yellow than that of the other Cybermen. (VG: Blood of the Cybermen)

Known victims

 * Two unknown members of Torchwood 1 (DW: Army of Ghosts)
 * Several British army officials (DW: Doomsday)
 * Several unit officers (DW: Doomsday)
 * Elizabeth Meadows (VG: Blood of the Cybermen)
 * Robot Airship conductor (DWBIT: Drones of Doom)
 * Ice Snake (DWBIT: Enemy Mine)
 * Other Cybermen (accidental) (DWBIT: Time of the Cybermen)
 * Cyber-Lord and guards (by Chisholm using a Cyber arm) (VG: Blood of the Cybermen)