Posted by two gun charlie: nope , most of them know you can't draw from concealed faster than they can slash you with a knife , so they just walk up with a knife and ask you to hand it over (a partner might be standing a little behind you) most people will resist (and get stabbed) if you don't resist you will more than likely get shot with your own gun. And therefore the clever little trick , because once you hand over the gun , they concentrate on the gun , instead of on your other hand
and yes this situation has played out a few times ...
Well, I won't say it cannot happen, but I do not think I have ever heard of anyone demanding a firearm from a concealed carrier in this country.
Every so often someone takes, or tries to take, a firearm from an open carrier, but I don't know of any situation in which the crook asked for it first.
The subject of police officers being shot with their own firearms was raised earlier. Because police officers are charged with the duty of stopping fights and effecting arrests of persons who are likely violent and who may be very desperate, that is an obvious risk. But it has nothing much to do with the discussion here.
Back to concealed carry: as JustinJ said, either the "bulge" is much more likely to be a cell phone [or amulti-tool, etc.] than a firearm, or the carrier is not concealing properly.
I carry whenever I can, and I am not aware of anyone ever noticing. Yesterday, I twice walked past several seated peace officers who were eating lunch, and while they were obviously being observant and watched me approach and pass, none of them glanced at my IWB carry position.
Having to draw from concealment puts the victim of a close quarter attack at a disadvantage, but giving fair warning would tend to even up the odds. I cannot imagine why any violent criminal actor would take the chance.
I would love to tell you more but as you can imagine I am bordering on what some might see in the same light as entrapment ...and in this country it is severely frowned upon by the powers that be.
I wondered why you have been beating around the bush. In this country, there would be little question about the justifiability of using physical force, or even deadly force if necessary, to prevent the taking of a firearm in a robbery. The question of entrapment would never come up.