This paper gun is the Buck Rogers' Blaster, named Blaster Mk. I, based on the Buck Rogers in the 25th Century TV series, the paper model is created by Marcell von dem Berge. Buck Rogers in the 25th Century is an American science fiction adventure television series produced by Universal Studios. The series ran for two seasons between 1979-1981, and the feature-length pilot episode for the series was released as a theatrical film several months before the series aired. The film and series were developed by Glen A. Larson, based upon the character Buck Rogers created in 1928 by Philip Francis Nowlan that had previously been featured in comic strips, novellas, a serial film, and on television and radio.
You can download the paper model here: Buck Rogers in the 25th Century - Blaster Mk. I (Buck's Blaster) Free Download