In 1999, the incident at Columbine high school in Littleton, Colorado will be an even that will go down in history as one of the most terrifying school shootings. Fifteen were brutally murdered, while twenty-three more were injured. During the 2012 shooting in a movie theater in Aurora, Colorado, twelve people were killed and fifty-eight were wounded as a gunman opened fire. October 2018 in Las Vegas, Nevada, fifty-eight were shot dead at a music festival, the largest number of casualties in the modern history of mass shootings. Equally important, the most common factor of the mass shootings, the ease of access to weapons and the choice of weaponry, a semiautomatic gun. With this in mind, the access that the Columbine shooters had to these guns were supplied by a friend who purchased the guns supplementing the fact that firearms are easy to obtain without a background check. Las Vegas gunman was able to purchase thirty-three guns in a span of a year, the Federal Law states that buyers of multiple firearms must be reported, since the purchases were not noted, a loop whole was created allowing the gunman to stock pile assault weapons. In the case of the Aurora shooting, all weaponry was legally obtained, the shooter purchased the guns himself and passed the background check. In this case the guns were purchased at