J.D. Tuccille on New Technologies Challenging Gun Control Laws

In February, the techie gun-rights group Defense Distributed unveiled a 3D-printed lower receiver for an AR-15 rifle that withstood hundreds of rounds of fire. A YouTube video of the component in action was accompanied by the terse statement, "Does not fail from firing stresses. 600+ rounds." As J.D. Tuccille reports, it's a clear demonstration of how new technologies can challenge gun control laws.