I believe Im correct in this ...

Stingers weapon arm is clamped to the axle.. a bit like a conrod .. with a brake lining material replacing the bearing .....this allowed them to set a drag and limit the force transmitted from the axle to the weapon and visa versa.

Have a look here .....http://web.archive.org/web/*/http://www.robot-stinger.co.ukhttp://web.archive.org/web/*/http://...-stinger.co.uk