In the two years since, what has changed, what has been fixed, and what has stayed exactly the same?
Immediately following the tragedy, Virginia Governor Tim Kaine and other authorities called on lawmakers to close the so called "gun show loophole" -- by which anyone can buy a gun from a private dealer with no background check and no questions asked. Two years later, that loophole is still very much open, in Virginia and 32 other states around the country.
So just how easy is it to buy a gun at a gun show?
For over a year, ABC News has followed Omar Samaha on a very personal quest to hold those lawmakers to their word. Omar's sister Reema was one of 32 shot and killed at Virginia Tech. We went with Omar to a gun show in Richmond, Va. -- one of hundreds held every weekend across the state of Virginia and the country. We gave Samaha $5,000 and one hour to see how many guns he could buy, and how many questions he would be asked.
CLICK HERE TO HELP OMAR SAMAHA FIGHT GUN VIOLENCE.
By 9:30 in the morning, the parking lot was already packed full of cars. Groups of men, couples and even families with children in tow streamed toward the quickly growing line out front. Samaha, 25, joined the crowds and while waiting on line, he was approached by a seller and given the opportunity to make a quick purchase. He bought a Glock handgun, with no background check, and no questions asked.
"He was just sitting right outside the door, I went up to him. 'How much do you want for it?'
'Here's the cash.'
'Thanks. See you later.'
"That was it."
For Samaha, the Glock handgun was a particularly painful purchase. It was the same kind of gun used to kill his sister Reema when she was a freshman at Virginia Tech. Just holding the gun in his hand was difficult.
"I don't want to think about how gruesome it was and how somebody used this type of weapon on my sister and so many other innocent people. It's devastating," he said.
Samaha walked back into the gun show, and within minutes he was out again, this time carrying a Colt AR 15, a semi-automatic assault weapon very similar to an M16. We asked if there were any questions asked.
"Nothing," he said. "I just went up, gave him cash. He's like, 'Cash is all you need.'"
Over the course of the hour, Samaha purchased 10 guns: three rifles, four shotguns, one handgun. He could have purchased many more handguns, but he wanted to abide by Virginia State law, which allows the purchase of one handgun per month, and two assault weapons.
Samaha was never asked to fill out any type of background check. At one point he was asked to show identification. When Samaha said he didn't have any, the seller quickly relented, not wanting to lose a sale.
"He's like, 'Give me $100 more and I'll let you go and take the risk.' I got two guns for $600 without any identification check," Samaha said.