Do It Yourself Submachine Gun

Product Description
Build your own 9mm, blowback, selective-fire submachine gun that?s as powerful as an Uzi or HK MP5 but has fewer parts and is more durable. Simply follow the step-by-step instructions and machinist?s drawings in this book.

For academic study only as general information: you might need some expensive and hard to get precission equipment and a really wide experience using it, to follow these instructions. Also, in most of the countries might not be legal to build a submachine gun.