The author, David Findlay, has spent his entire life around firearms and in the field of gun design. The author first worked for 26 years at Remington Arms as a designer and in middle management in charge of other gun designers and firearms acceptance testing. He then worked four years for Marlin Firearms/H&R 1871 as a product engineer and later in charge of the engineering group at H&R 1871. Currently he is employed by Smith & Wesson as a product engineer. David's experience has included working on the following Remington product lines; M/870, M/1100, M/1187, M/522 Viper, M/700, and SP-10 Magnum. While at H&R 1871, David was involved in improving product quality, product performance, and new line extensions of both their rifle and shotgun single shot product lines. Now at Smith & Wesson, David has worked on the M&P 4 full auto, the M&P 15 semi-auto long gun lines, and has also worked on the Thompson Center product lines as a product engineer. Along the way, the author has received eight patents: #5,373,775Disconnector in Two Planes #5,442,874Firearm Mag Box Alignment #5,448,939Firearm with Multiple Sears #5,551,180Releasable Bolt Lock #6,240,670Firing Pin Lock #6,256,917Firearm with Lockable Safety #8,261,652 Ambidextrous Bolt Stop #8,418,803 Flash Suppressor This is David Findlay's second book.