<h2>You wouldn't do this to your AR, but Sweeney did it here!</h2> <p>With manufacturers branching out into nontraditional calibers, and continual advances in optics, ammo and associated gear for the AR-15, <i>Gun Digest Book of The AR-15, Volume IV</i> brings you up-to-date on the latest developments in the AR industry, including chapters on:<ul> <li>.223 vs. 5.56: What's the problem?</li> <li>Various .300s of the smaller-than-.308 size</li> <li>Wilson 7.62X40</li> <li>The .17 HMR, ADCOR DI carbine, and SIG 516</li> <li>DelTon and Stag Arms? Oh yes.</li></ul> Plus, author Patrick Sweeney hits the range and subjects these guns to some serious testing. To find out just how much abuse they can withstand, he:<ul> <li>Buried them in dirt and sand</li> <li>Submerged them in water</li> <li>Dropped them from heights</li> <li>Ran them over with trucks</li> <li>Froze them</li> <li>Blasted them with a shotgun</li></ul> And then he fired them, documenting the entire process in photos!</p> <p>Kick back and watch in horror as events unfold?and find out which guns survive the torture.</p>