cstrike

This Script makes you duck before you fire, and keeps you there until you release the key. You have to enable/disable it with the key you bind to "dfire".

Spoiler:

alias dfire "dfireon"
alias dfireon "bind mouse1 +fire; alias dfire dfireoff"
alias dfireoff "bind mouse1 +attack; alias dfire dfireon"
alias +fire "+duck; wait; wait; wait; +attack"
alias -fire "-attack; -duck"

bind "v" "dfire"