CS GO command change weaponed hand

cl_righthand 1 - Right hand cl_righthand 0 - Left hand

in console
bind "keyname" "cl_righthand 1" <hit enter>
then
bind "keyname" "cl_righthand 0" <hit enter>

Change keyname to whichever key you want to perform that action.

Alternatively you can use

bind KEY "toggle cl_righthand 0 1"

to have the switch on the same button.

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