The Avtomat Kalashnikova, also known as an AK47

The AK-47 is a selective-fire, gas-operated 7.62x39mm assault rifle,first developed in the USSR by Mikhail Kalashnikov. It is officially known as Avtomat Kalashnikova .. It is also known as a Kalashnikov, an "AK", or in Russian slang, Kalash.

Design work on the AK-47 began in the last year of World War II (1945). After the war in 1946, the AK-46 was presented for official military trials. In 1947 the fixed-stock version was introduced into active service with selected units of the  Soviet Army.
 An early development of the design was the AKS (S—Skladnoy or "folding"), which was equipped with an underfolding metal shoulder stock. In 1949, the AK-47 was officially accepted by the Soviet Armed Forces
and used by the majority of the member states of the  Warsaw Pact.
The original AK-47 was one of the first true "assault rifles" to be manufactured, after the original  Sturmgewehr. Even after six decades the model and its variants remain the most widely used and popular assault rifles in the world because of their durability, low production cost, and ease of use. It has been manufactured in many countries and has seen service with armed forces as well as irregular forces
worldwide. The AK-47 was the basis for developing many other types of individual and crew-served firearms. More AK-type rifles have been produced than all other assault rifles combined.
The Germans were the first to pioneer the assault rifle concept, during World War II, based upon research that showed that most firefights happen within 400 meters and that contemporary rifles were over-powered for most small arms combat.^. The Germans sought to develop a select-fire intermediate powered rifle combining the firepower of a submachine gun with the accuracy and range of a rifle.

After 10 years , the Federal Assault Weapons Ban  (signed into law by President Clinton) expired on September 13, 2004, as part of the law's sunset provision ( a measure within a statute, regulation
or other law that provides that the law shall cease to have effect after a specific date, unless further
legislative action is taken to extend the law. Most laws do not have sunset clauses and therefore remain in force indefinitely). There have been multiple attempts to renew the ban, but no bill has reached the floor for a vote.

The evil monster whose name I will not speak, was able to buy this same kind of assault rifle.It jammed during his rampage, apparently because of a problem with the 100-shot magazine feeding it. Had it not jammed, the massacre would have had more tragic and deadly consequences. He did pull out other guns to use.
Various news agencies are reporting that in the days since the movie massacre in Aurora, Colorado, firearms sales have spiked, not just in Colorado but across the nation. This begs the obvious question, and I'm sure you already know what it is.

I don't have a gun, and I don't want one. I don't have a criminal history. My background is squeaky clean. I would easily pass any background check for a gun.
I'm not in the military.
I have a right to own a gun, but what's to stop me or anyone from legally getting the same kind of assault weapon that that evil monster used? .

Not a damn thing, and that's the most criminal part of this story, that Congress allowed the assault weapon  ban to expire  without renewing it.The owners of these guns (like that evil monster) are intending to do major damage.

Now, something else to worry about.