From the bookstore site:
“Badass LEGO Guns is packed with building instructions for five impressive looking “weapons” built entirely from LEGO Technic parts. In this heavily illustrated 4-color book, you learn how to use LEGO Technic pieces to build working model guns like the Warbeast, a sophisticated, fully-automatic submachine gun; Parabella, a semi-automatic pistol; Thriller, a slide action crossbow pistol with smooth cocking and chambering mechanisms; and the Magic Moth, a simple butterfly “knife” built with Technic pieces.”
“Badass LEGO Guns is packed with building instructions for five impressive looking “weapons” built entirely from LEGO Technic parts. In this heavily illustrated 4-color book, you learn how to use LEGO Technic pieces to build working model guns like the Warbeast, a sophisticated, fully-automatic submachine gun; Parabella, a semi-automatic pistol; Thriller, a slide action crossbow pistol with smooth cocking and chambering mechanisms; and the Magic Moth, a simple butterfly “knife” built with Technic pieces.”
“Martin Hudepohl, a.k.a. Xubor, built his first LEGO guns in the early 1990s and has been developing ever-more sophisticated models since. He is a freelance programmer, who also composes original music. He lives in Germany.”
Video trailer at this link: http://youbentmywookie.com/wtf/badass-lego-gun-demostration-trailer-11362