The Deer Gun (sometimes spelled Dear Gun) is a very interesting replacement for the Liberator Pistol. Research indicates it was developed for the CIA in the early 1960s. The Liberator Pistol book contains pictures of the pistol as well as a single-page instruction sheet (similar to the one packed with the Liberator pistol) and a 16-page instruction book written in Vietnamese. See the new information under BOOK INFORMATION.