Glock makes them for their fully automatic “machine pistols.”
?
http://washingtontimes.com/national/20070417-115358-5376r.htm
“High-capacity ammo clips became widely available for sale when Congress failed to renew a law that banned assault weapons,” began the ABC story, which cited the “expert” opinion of Paul Helmke of the Brady Campaign to Prevent Gun Violence: “When you have a weapon that can shoot off 20, 30 rounds very quickly, you’re going to have a lot more injuries.”
At the time of that report, there was no information about the weapons Cho Seung-hui used to kill his victims before committing suicide. Since then, law enforcement officials have said the mass murderer used two pistols (reportedly a 9 mm Glock and a .22-caliber Walther), but there was nothing to suggest that large-capacity magazines were involved in the crime.”
They are talking about the glock 18.
Yes, they make them for the Glock 18. This is a selective fire handgun that is identical the the standard Glock 17 except that it has a selector switch on the left rear of the slide that turns it fully automatic.
They even fit in Glock 17 holsters.