#showtooltip
/run if not IsMouseButtonDown"RightButton" then Outfitter:WearOutfitByName("MP5")end
/stopmacro [btn:1]
/use Water Shield
/outfitter wear Normal
Perhaps..
Your request is not very clear.
Use plain language to describe what should happen when you left or right click.
I don't know if this will help you but here is the macro I use to apply poison to my daggers as a rogue:
#showtooltip
/use [button:1] Instant Poison
/use [button:2] Crippling Poison