I have never pretended to portray that I know everything about weapons, though I would like to. I have handled a wide array of weapon systems in my Military and Law Enforcement careers and have become very proficient with many of them. However, in a search for further knowledge and to better myself, I have picked up a book titled The AR-15, Volume 2 by Patrick Sweeney. Skimming through the book, some of the information looks like information that I already knew, but there is a lot of good information on topics that are rarely covered in general AR-15 type training.

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Editorial Review

Product Description
*Most popular and versatile rifle in the U.S. - top choice for everyone from girls' high school shooting teams to police squads
*Features DIY projects to easily enhance firearm performance

Gun Digest Book of the AR-15, Vol. 2 not only covers how well this rifle performs in testing, but also provides projects you can do to enhance your rifle's performance. Packed with 600 detailed photos, including step-by-step instructions for projects, and a primer on aftermarket parts, this guide delivers honest test results for the rifle, its commonly available ammunition and magazines, and accuracy. There's something in this book for every fan of the AR-15.
I would like to start a discussion of what books you have found to be useful, resourceful, helpful, or just all around a good read.