Sonic stun weapon

The sonic stun weapon, also called a stunner, is a hand-held weapon designed by Henry Foss. It uses sonic sound waves to temporarily stun the victim, there are at least two designs of the sonic stun weapon the latter of which is completely different in appearance to the original design, the original mark 1 design fires what appears to be sound waves, while the newer (probably more robust and almost certainly more powerful) mark 2 version appeared to fire physical energy blasts and can occasionally be seen using to strike or hit abnormals as a melee weapon meaning the mark 2 version must be fairly robust to withstand the impacts involved with strikes against/striking an individual to cause injury or possibly accidental death or alternatively it is a technique used to incapacitate them/force compliance through pain compliance techniques which are often highly effective at gaining compliance or breaking resistance.

History

Season 2

	Helen Magnus using the sonic stun weapon. Episode 2x11 - "Haunted": When Helen Magnus used it on John Druitt, she had to shoot him three times to bring him down but the final shot stopped his heart.

Season 3

Episode 3x04 - "Trail of Blood": Stunner batteries are removable, as shown by Henry using the stunner battery in order to power the emergency lighting in a destroyed Cabal bunker. They also appear to have adjustable power settings as shown during Nikola Tesla's rescue from a army of multipedes; the shot from the stunner suddenly changes from blue to orange, and is capable of bringing down a rock ceiling. It is unknown whether Henry put this in intentionally.

Episode 3x05 - "Hero II: Broken Arrow": Stunners have also been used as offensive weapons on several occasions, for example when Helen Magnus is forced to shoot a mercenary who was attempting to capture an abnormal.

Season 4

	Episode 4x05 - "Resistance": By 2011 the mark II sonic stun weapon was designed by Henry Foss. Later Magnus and Henry Foss used the mark II sonic stun weapon inside Area 51 after tracking an abnormal fugitive, and discovers that Tesla is the head of a secret research lab for a Homeland Security agency that conducts tests on abnormals.
	Helen Magnus with a mark II sonic stun weapon. The sonic stun weapon being fired. Episode 4x08 - "Fugue": The Sanctuary team used the mark II sonic stun weapon against a humanoid abnormal with a naturally armored body in the Sanctuary, though it had no effect on the abnormal. Magnus had to use a super sonic stun weapon instead.