Editing Teflon-coated bullet (section)

==Lethality debate==
In 1982, [[NBC]] broadcast a television special on Teflon-coated bullets that argued they were a serious threat to American law enforcement because of their supposedly increased ability to penetrate [[ballistic vest]]s.
This led various US [[Gun politics in the United States|gun control organizations]] to label these types of bullets with the epithet "cop killers". In 1983, US Representative [[Mario Biaggi]] reported that Du Pont Company officials agreed to stop selling teflon to individuals and companies that used it to make ammunition.<ref>{{Cite book|url=https://books.google.com/books?id=xh6OX9DKltsC&dq=teflon+coated+bullet&pg=PA85|title = Armor-piercing and Exploding Bullets: Hearings Before the Subcommittee on Crime of the Committee on the Judiciary, House of Representatives, Ninety-seventh Congress, Second Session, on H.R. 2280, H.R. 5392, and H.R. 5437 ... March 30 and May 12, 1982|year = 1983|publisher = U.S. Government Printing Office}}</ref>

Several calibers of KTW rounds were proven to penetrate ballistic vests under certain conditions. However, their inventor Kopsch said in a 1990 interview that "adding a Teflon coating to the round added 20% penetration power on metal and glass.  Critics kept complaining about Teflon's ability to penetrate body armor [...]  In fact, Teflon cut down on the round's ability to cut through the nylon or [[Kevlar]] of body armor."<ref name="NRAction newsletter, Volume 4, Issue 5 (May 1990)"/>