Blueprints for making a variety of plastic guns, including AR-15-style rifles, on 3-D printers were scheduled to be posted online today. Who is the man behind their planned release, and why is the federal government taking his side? Guest: Tiffany Hsu, a business reporter for The New York Times. For more information on today’s episode, visit nytimes.com/thedaily.

Subscribe today at nytimes.com/podcasts or on Apple Podcasts and Spotify. You can also subscribe via your favorite podcast app here https://www.nytimes.com/activate-access/audio?source=podcatcher. For more podcasts and narrated articles, download The New York Times app at nytimes.com/app.

Hosted by Simplecast, an AdsWizz company. See pcm.adswizz.com for information about our collection and use of personal data for advertising.