Dive into the world of military weaponry with the "Department of The Army | Frankford Arsenal | Silencers Principles And Evaluation" manual. An original piece from the United States, this manual provides in-depth coverage of silencer technology and evaluation methods used by the Frankford Arsenal during the Vietnam War (1961-75). Collectors and enthusiasts of militaria will find this book a treasure trove of information, exploring the principles and advancements in silencer design as applied during this conflict. It serves not just as a historical document but also as an insightful resource for anyone interested in the technical aspects of military weaponry.