The Parkland shooter's AR-15 was designed to kill as efficiently as possible
223 bolt action rifle bolt damage after case head failure [Archive] - The Firing Line Forums
It's 223 Day! - 223 Remington - What, Why, and our Appreciation for It
What rifles are chambered to fire the .223 Remington? It seems to me that most of the rifles that can fire the .223 are actually chambered to fire the 5.56 NATO, such
What an AR-15 Can Do to the Human Body | WIRED
AR-15 Myths: The Weapon Of Mass Destruction And Assaulting Stuff
223 bolt action rifle bolt damage after case head failure [Archive] - The Firing Line Forums
It's 223 Day! - 223 Remington - What, Why, and our Appreciation for It
It's 223 Day! - 223 Remington - What, Why, and our Appreciation for It
223 bolt action rifle bolt damage after case head failure [Archive] - The Firing Line Forums
It's 223 Day! - 223 Remington - What, Why, and our Appreciation for ItThe Firearm Blog
It's 223 Day! - 223 Remington - What, Why, and our Appreciation for It