Patrick Walsh notes a discrepancy when it comes to acquiring guns in the US:
As a citizen and former soldier, I acknowledge the grim necessity of firearms and their manufacture. Just as in the days of the Constitutional Convention, the security of a free nation requires a well-regulated military. But making firearms available to the military vastly differs from making them available to a public of over 300 million people. Consider the disparity of the vetting processes. In order for someone to get their hands on a rifle as a Marine, they have to join for several years and undergo thirteen weeks of a famously arduous boot camp. In Pennsylvania, a cursory felony check is all that stands between any 18 year-old and an AR-15 (the civilian version of an M16), unless, of course, the rifle is purchased at a gun show, where no background checks are required.
The Dish 