That's one man's guess, but even if 100% followed direct orders to fire on American citizens, our military isn't big enough to stop an all-out insurgency in this country.
Look at what it's taken to quell the "insurgency" in Iraq. Our troops have never faced more than maybe a hundred thousand insurgents there. There are millions upon millions of gun owners in this country.
Think about it. The odds are insurmountable for any army. It's why this country has never been attacked by ground troops on its own soil. The People cannot be conquered militarily.
Who knows what the number is? I do know that the soldiers at Fort Bragg are talking amongst themselves about it, and about half say they won’t take up arms. I don’t believe that more than 10 to 15% of all gunowners will fight, if it comes to that. What is the membership of all of the major guns rights groups combined out of a possible 80 million; perhaps 10 million?