Guns and Bullets

Guns and Bullets is both a skill book and a perk magazine found throughout the Fallout series.

Background
Guns and Bullets was published yearly. It described the handling of firearms and contained reviews. The perk magazines cover a wide variety of topics, including hunting, weapons, and gun law. 

Fallout/2/Tactics
This skill book is found in the southwest United States.

Fallout 3/New Vegas
This skill book is found in the Capital and the Mojave Wasteland.

Fallout 4
These perk magazines are found in the Commonwealth and Appalachia.