You remind me of the Florida guy who shot up the crowd in Las Vegas. Similar kind of guy, loved his guns. In the wrong circumstances, who really knows what you are capable of or what kind of violence you might encourage. What we do know is if you are armed you are more likely to kill someone and if you own some of these war ready guns you are more likely to kill many people.
Every time some guy loses it and shoots up a lot of innocent people, especially kids, it gets harder to care at all what you think about guns. US society is coming to that conclusion slowly but surely. Your work place refuses to let you bring in your guns to your work; maybe you should think carefully why that is the case, and that any amount of training or implied self supposed restraint isn't going to change their policy.