According to law enforcement, the shooter, a Syrian named Ahmad Al Aliwi Alissa, whose family immigrated here in the early 2000s, purchased the firearm used in the shooting on March 16th. Article archived here. He did not have any other firearms in .556 caliber. Six days later he shot the place up and murdered 10 people.

Now, where I live, and everywhere else I know of, ammo (especially popular calibers like .556) is impossible to find. It's nowhere.

So where the fuck did this guy get his ammo??