Submachine Guns Caliber .45 M3 and M3A1

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Focusing on the M3 submachine gun's design and operational capabilities, this field manual serves as a comprehensive guide for training crew members. It highlights the M3's advantages over the Thompson, including cost-effectiveness and accuracy, and details assembly, maintenance, and operation procedures. The manual also covers the modernized M3A1 variant, emphasizing the interchangeability of parts. Originally restricted, this declassified document is now reprinted, preserving the integrity of the original text and offering valuable insights into this iconic weapon's history and functionality.