Author and toy designer John Austin provides detailed, step-by-step instructions with diagrams to show stealth warriors how to build 37 different ninja weapons for the modern era. Each of the projects in "MiniWeapons of Mass Destruction 4" are built from common household and office items--plastic utensils, markers, clothespins, paper clips, wire hangers, and discarded packaging--all clearly detailed on materials lists. Builders are offered a variety of samurai stars, blowguns, throwing darts, siege weapons, and ninja tools to choose from. Once they've assembled their armory, the author provides novices several targets to construct to practice their shooting skills. Armed, trained, and shrouded in black, readers are now prepared for missions of reconnaissance, sabotage, and other grim errands.