FM 23-31, 40mm Grenade Launchers M203 and M79

This manual supersedes FM 23-31, 10 May 1965; (C) FM 23-4, 22 September 1964 and TC 23-10, 7 April 1966, including all changes. FM 23-31 CHAPTER 1 INTRODUCTION 1-1. Purpose ... standard ammunition, safety precautions, and marksmanship training. 1-3. Recommended Changes ................
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