We thought we'd seen LEGO's used to build almost any and everything. Bow-ties, working telephones, heart pins, even computer towers. But, now, after watching this promo video for author Martin Hudepohl's book Badass LEGO Guns, we know LEGOs can be used to build things a bit more unsavory and a lot more fun. In his book, Hudepohl (also author of LEGO for Adults) shows you how to construct five "weapons" out of LEGO Technic parts. Tired of that NERF gun? Peep the video above, then cop the book to learn how to build things that would make Mayor Bloomberg want to hold a press conference.

via Crunch Gear