What to know about machine gun laws in the US - ABC News
How the Las Vegas Shooter Could Have Gotten an Automatic Rifle | WIRED
Definition of what's an 'assault weapon' is a very contentious issue
Handguns converted to high-capacity machine guns fuel deadly violence in Chicago : NPR
Map of Federally Regulated Weapons - Metrocosm
The Most High-Tech Guns in the World
Gun laws permit 18-year-olds to buy AR-15s in Texas, but not handguns | The Texas Tribune
Army Announces 2 New Rifles for Close-Combat Soldiers > U.S. Department of Defense > Defense Department News
How Machine Guns Work | HowStuffWorks
Amazon.com: Holiky Automatic Toy Guns for Nerf Bullets, Electric Toy Foam Blasters & Guns with 3 Shooting Modes, DIY Customized Machine Gun with 100 Pcs Refill Darts, Multi-Player Game for 6-12 Year
Local gun store: Obtaining fully-automatic guns a long process | KOKH
Auto Sear: $20 Device That Turns Handguns Into Automatic Weapons - The New York Times