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ALBANY, N.Y. -- As the technology to print 3-D firearms advances, a federal law that banned such guns is about to expire.

U.S. Sen. Chuck Schumer says he's seeking an extension of the law before it expires Dec. 9.

He says the technology of so-called 3-D printing has advanced to the point anyone with $1,000 and an Internet connection can access the plastic parts that can be fitted into a gun. That weapon can't be detected by metal detectors or X-ray machines.

Schumer says that means anyone can download a gun cheaply, then take the weapons anywhere, including high-security areas.

The Democrat is pushing the extension along with Sens. Patrick Leahy of Vermont and Bill Nelson of Florida.