Guns produced using 3-D printers have found an opponent in state Sen. Leland Yee, who plans to introduce legislation that would ban in California the use of the do-it-yourself technology to create firearms.
A new dimension is emerging in the battle between gun enthusiasts and their less-thrilled opponents. A 3-D printer, which is exactly what it sounds like, has been used to make parts for a firearm. The composite gun works, and the plans are available freely online.