The tools of modern terror: How the AK-47 and the AR-15 evolved

10 Best AK-47 Upgrades [Hands-On]: Rails, Triggers, & More - Pew Pew Tactical

Why has the AK-47 become the jihadi terrorist weapon of choice?, Islamic State

A Beginner's Guide to the AR-15

How the AK-47 became the 'weapon of the century

Springfield Armory Hellion Bullpup Carbine in 5.56 NATO: Ful - RifleShooter

Submachine Guns (SMG's): Outpaced by Today's Modern Short-Barreled Rifles (SBR's)/Sub-Carbines, or Still a Viable Tool for Close Quarters Battle/Close Quarters Combat (CQB/CQC)? – (DR): An online tactical technology and military defense

How the AK-47 and AR-15 Evolved Into Rifles of Choice for Mass Shootings - The New York Times

The History of the Iraqi AK Tabuk Rifle

Why the AK-47 Is The Deadliest Gun Ever Made - Warrior Maven: Center for Military Modernization

AR-15 vs AK-47: A Battle as Old as Time - Sniper Country

What gun looks like an AK 47? - Quora

AR-15 Vs. AK-47: Which is the Best Rifle for the Apocalypse?