Just read a little more info: "A law enforcement source said two of the guns were purchased at a Bass Pro Shop in Denver, while the two others were bought at separate Gander Mountain Guns outlets in the area. Investigators also found a drum magazine, capable of carrying 100 rounds of ammunition, which was attached to the AR-15 rifle, two law enforcement officials said." http://www.glocktalk.com/forums/showthread.php?t=1433322 Edit: just saw this: Mostly concerned about the 100 round drum. Also, I'm guessing the shotgun was a Saiga, based on early AK reports. Edit: Whew, Remington! High capacity mags could fuel talk of restrictions. But actually, upon further thinking, I'm not that worried. Even after the Tucson shootings, with a 30 round glock mag, nothing came of it. This isn't very different. There just isn't an atmosphere for gun control laws right now. In fact, plenty of counter arguments are being made (why restrict legal gun holders from having guns in the theater, for example).