the AR-15 embodies a quintessentially American fantasy for engaging the world: maximum impact, minimum pushback, all bundled up in sleek aesthetics and sold at a hefty profit margin.
Guns and Understanding
Sherri Spelic
61

The AR-15, chambered in its normal .223 (5.56x45) caliber, has anything but maximum impact. Complaints from the wars are that it doesn’t stop the enemy. Sure, it will kill him, if he bleeds out due to delayed medical care, but unless you get a direct heart or head shot, he won’t go down. The old .30/06 and .308 rifles have no such problem. Nor does America’s most popular hunting caliber, the 30–30 Winchester.