This monograph is devoted to weapons, cartridges, training aids and shooting rules and is a kind of introduction to the development of sports and shooting skills of biathletes. The book contains the technical characteristics of modern biathlon rifles, describes the features of their behavior during shooting, provides some nuances that are not in any technical documentation, reveals the principles and rules for operating, configuring and repairing individual components and mechanisms, as well as methods of caring for weapons. In the book, the reader will find the answer to the question: "How to handle a rifle in order to get the maximum quality of shooting from it." In addition to purely technical issues, the monograph covers models of competitive activity, trends in the development of the sport, the history of the development of biathlon weapons and shooting conditions.