My gut reaction upon capturing the BG's weapon would be to disable it. I have no idea of the said weapons condition, nor time to inspect it. For all I know it could be more dangerous for the person holding it then the one staring down the muzzle. I would not "threaten deadly force" unless it was at the instant before I pulled the trigger.
I'm very curious to hear what the "right" answer is.
edited to add: over 30 views of this thread and I'm the only one willing to throw himself to the wolves?
