today you will be making an npc hold a physgun that kind of works with no mods.
first type "kill" in the console and press enter.
this will make you drop your physgun.
then position your physgun into your ragdoll's hand and freeze it. make sure not to get too close or you will pick it up.
then select a winch in the context menu and select either of the blue lasers and set the thickness to around 5.
attach the end of the physgun to the object you want your mock physgun to pull.
press the shorten length button and watch your ragdoll move the object!