See the Pictures: Meet the 5 Best Modern Sporting Rifles - 19FortyFive
Faxon Firearms 16" 556 Integral Barrel ION Ultralight Modern Sporting AR-15 Rifle - AR15Discounts
M&P®15 SPORT II | Smith & Wesson
A Brief History Of The AR-15 : NPR
IWI US ZION-15 semi-automatic modern sporting rifle, IWI's first AR-15 | GUNSweek.com
Once Banned, Now Loved and Loathed: How the AR-15 Became 'America's Rifle' - The New York Times
AR-15 style rifle - Wikipedia
NRA Women | Smith & Wesson's Newest AR-15: M&P 15T II
Del-Ton, Carbine Rifle
Smith & Wesson M&P15 Sport II with Crimson Trace Red/Green Dot Sight
Hunting with the AR-15 Modern Sporting Rifle - The Shooter's Log
AR-15 pistol vs rifle: Colorado suspect allegedly used a Ruger AR-556 pistol. Here's how it differs from an AR-15-style rifle | CNN
BlackHawk Firearms & Security Supply | Smith & Wesson, M&P 15 Sport II, Semi-Automatic Rifle, AR-15, 5.56 NATO, 16" Barrel, Black Finish, Black Collapsible Stock, 1 Mag, 30+1 Round, Flattop, Flip Up Rear Sight
Ruger AR-556 Modern Sporting Rifle: Ruger AR-15 on a Budget -The Firearm Blog
Amazon.com: Shooter's Bible Guide to AR-15s, 2nd Edition: A Comprehensive Guide to Modern Sporting Rifles and Their Variants: 9781510710979: Howlett, Doug, Manning, Robb, McKee, Tiger: Books
Definition of what's an 'assault weapon' is a very contentious issue