The Giffords Law Center to Prevent Gun Violence asked the providers that host GhostGunner.net and GhostGuns.com to disable the websites for violating the hosting companies' terms of service.
The sites sell kits, components and machines that help create homemade semi-automatic weapons. It's legal to build a gun in a home or a workshop, and advances in 3-D printing and milling have made it easier to do so. The kits can be purchased legally for a few hundred dollars without the kind of background check required for traditional gun purchases.
Attorneys for the gun control advocacy group said the homemade weapons are increasingly being used in crimes and asked each of the companies to "invoke its policies to help stem the tide of this illegal, deadly behavior."
They argue that the hosting companies, Shopify and DreamHost, should invoke their ability to disable and terminate the websites. The group argues that the two sites sell "the sort of products that have already caused scores of senseless deaths — and are likely to cause many more, unless taken off the market."