Jack Lewis. The Gun Digest Book of Assault Weapons. 7ª. Iola, Wisconsin: Gun Digest Books, 2007, p. 250. ISBN 978-1-4402-2652-6. «Around 1970, Heckler & Koch developed the selective-fire VP70 (VolksPistole: People's Pistol) with the reported hope that it would be chosen to arm village militias in Vietnam.»[Enllaç no actiu]