OLD x5 piston switch?

havand

Enlightened
Joined
Jun 7, 2006
Messages
607
Location
Pa, U.S.
Can someone explain to me how a piston switch in a light like an old Inova x5 or a McGizmo works? I'm looking to use one, but I'm a bit shy about the design of it. Thanks guys!

EDIT: I understand the idea and how it turns on and off, but how do you keep it from binding up or becoming crooked in the housing, etc
 
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