1. This is an AR-15-style semi-automatic assault weapon. Currently there are no federal restrictions on owning one.
2. Since 2012, the AR-15-style assault rifle has been involved in seven different large-scale shootings.
10. Update - Sept. 17, 10:14 a.m., EDT: According to multiple sources, including CNN, the military are pulling back from early reports that Alexis was armed with an AR-15
The sources, who have detailed knowledge of the investigation, cautioned that initial information that an AR-15 was used in the shootings may have been incorrect. It is believed that Alexis had rented an AR-15, but returned it before Monday morning’s shootings. Authorities are still investigating precisely how many weapons Alexis had access to and when.