Every aspect of all Glocks are explained, from specs to detailed assembly/disassembly, trouble shooting, performance & customization, (stuff that the Glock Armorers manual doesn't tell you). This is (beyond a doubt) the most complete comprehensive Glock text ever written. If you own a Glock, and you don't own this book, (in our opinion) you're making a BIG mistake. This book will open your eyes like never before. 298pp.