This 18 verses 21 year old argument regarding if you can serve you should have it had a long ago been put away when it came to something as simple as alcohol. Yes you can be drafted and forced into the military at the age of 18 but you can't buy alcohol in any state in this Union. So what's the difference if you can't buy an AR-15 at 18. I don't get it. They're both dangerous when not used properly.