Description
The fourth volume of Patrick Sweeney’s hit series, Gun Digest Book of the AR-15, is offered here as a PDF version for download .
What’s Inside You’ll find everything that made the print book great, just in a digital format. Here’s a look at what to expect:
Adcor
Cute Little .300S
.300 AAC Blackout
.300 Whisper
CMMG .300 Blackout
Wilson 7.62×40
Alexander Arms .17 HMR
Del-Ton Tapco
Sig 516
Stag Arms 3G
.223 vs. 5.56: What’s the Problem?
Chambering Rounds
Heat ’em Up!
Serial Firearm Abuse
Extra Tests
Magazines
Optics & Sighting Gear
SBRS, Cans & Comps, Oh My
Do We Really Need Those Rings?
A Word from the Author, Patrick Sweeney
“The main focus of this volume will be testing and abuse. I will be testing ARs in ways that you will not have read about except from declassified government testing. I must admit, and warn you, I do not have a multi-million dollar lab in which to test rifles, so there are limits. I cannot test to destruction although I do come very close in some instances.
“For example, I have in my hands (well, on my hard drive) a report the government did to test M4 barrels. They put the rifles in a fixture and slammed full-magazine full-auto bursts through them until the barrels essentially melted. The barrels became over-heated and soft, sagged, and bullets exited the side of the barrel, thus ending each test. ‘What the frak?,’ you ask? Why do that?
“Simple: in a military context, someone, somewhere, is going to use an M4 as an impromptu SAW, and the government would like to know how long that usage would last. Answer: a bit less than 400 rounds, depending on ambient temperature.
“Me, I did a less-abusive and more likely test, and measured temperatures, since it is unsafe to melt barrels while firing rifles unless they are locked in an armored room at the time.
“But, I buried them in dirt and sand, submerged them in water, dropped them from heights, ran over them with various vehicles, froze them and shot them with damaged ammo to get an idea of how much abuse they can withstand.
“When I was done I was still left with a question: Where are all these unreliable AR-15/ M16s I’ve been hearing about? Because it was very, very hard to get them to malfunction and, short of damage, they wouldn’t quit.”
About the Author
Patrick Sweeney is a certified Master Gunsmith, film consultant, certified armorer instructor for police departments nationwide, and author of many best-selling titles, including Gun Digest® Book of the 1911 volumes I and II, Gun Digest® Big Fat Book of the .45 ACP, Gun Digest® Book of the Glock, and Gunsmithing: Pistols & Revolvers.
Upon purchase you will receive ePub and PDF versions of this title.
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