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Military

*FM 23-31
HEADQUARTERS
DEPARTMENT OF THE ARMY
Washington, DC, 20 September 1994

FM 23-31

40-MM GRENADE LAUNCHER, M203

Table of Contents

  1. PREFACE

  2. CHAPTER 1. Introduction

    1. 1-1. TRAINING STRATEGY
    2. 1-2. COMBAT CONDITIONS

  3. CHAPTER 2. Operation and Function

    1. 2-1. OPERATION
    2. 2-2. LOADING
    3. 2-3. UNLOADING
    4. 2-4. CYCLE OF FUNCTIONING

  4. CHAPTER 3. Description and Maintenance

    1. 3-1. DESCRIPTION
    2. 3-2. TECHNICAL DATA
    3. 3-3. COMPONENTS
    4. 3-4. AMMUNITION
    5. 3-5. CLEARING PROCEDURES
    6. 3-6. GENERAL DISASSEMBLY
    7. 3-7. CLEANING AND LUBRICATION
    8. 3-8. INSPECTION
    9. 3-9. GENERAL ASSEMBLY
    10. 3-10. CARE AND HANDLING
    11. 3-11. CARE AND HANDLING UNDER NBC CONDITIONS

  5. CHAPTER 4. Performance Problems and Destruction

    1. 4-1. MALFUNCTIONS
    2. 4-2. STOPPAGES
    3. 4-3. IMMEDIATE ACTION
    4. 4-4. REMEDIAL ACTION
    5. 4-5. DESTRUCTION PROCEDURES

  6. CHAPTER 5. Marksmanship Training

    Section I. PRELIMINARY MARKSMANSHIP TRAINING

    1. 5-1. FOUR FUNDAMENTALS OF MARKSMANSHIP
    2. 5-2. LIMITED VISIBILITY
    3. 5-3. NBC ENVIRONMENT
    4. 5-4. FIRE COMMANDS
    5. 5-5. DRY-FIRE EXERCISES
    6. 5-6. SENSING AND ADJUSTMENT OF FIRE
    7. 5-7. GRENADE LAUNCHER RANGE LAYOUT
    8. 5-8. DESCRIPTION OF RANGE AND TARGETS

    Section II. BASIC GUNNERY

    1. 5-9. ZEROING THE M203 GRENADE LAUNCHER
    2. 5-10. OVERALL QUALIFICATION STANDARDS
    3. 5-11. DAY RECORD FIRE
    4. 5-12. DAY RECORD FIRE QUALIFICATION STANDARDS
    5. 5-13. MOUNTING THE AN/PVS-4
    6. 5-14. ZEROING THE AN/PVS-4 TO THE M203
    7. 5-15. NIGHT RECORD FIRE
    8. 5-16. NIGHT RECORD FIRE QUALIFICATION STANDARDS

  7. CHAPTER 6. Combat Techniques of Fire

    Section I. ADVANCED GUNNERY

    1. 6-1. CHARACTERISTICS OF FIRE
    2. 6-2. CLASSES OF FIRE
    3. 6-3. RANGE ESTIMATION
    4. 6-4. PREDETERMINED FIRES
    5. 6-5. TYPES OF TARGETS
    6. 6-6. DECONTAMINATION

    Section II. FIRE CONTROL

    1. 6-7. METHODS OF FIRE CONTROL
    2. 6-8. FIRE COMMANDS

    Section III. APPLICATION OF FIRE

    1. 6-9. SUPPRESSIVE FIRE
    2. 6-10. OVERWATCH FIRE
    3. 6-11. AREA AND POINT FIRE
    4. 6-12. TARGET ENGAGEMENT
    5. 6-13. LIMITED VISIBILITY
    6. 6-14. OVERHEAD FIRE

  8. CHAPTER 7. Train-the-Trainer Program

    Section I. ORGANIZATION

    1. 7-1. OBJECTIVES
    2. 7-2. MISSION-ESSENTIAL TASK LIST
    3. 7-3. TRAINER ASSESSMENT
    4. 7-4. ASSISTANT TRAINERS AND CADRE COACHES
    5. 7-5. COMMAND BENEFITS
    6. 7-6. PROGRAM PHASES

    Section II. TRAINING TASKS

    1. 7-7. PHASE I, PRELIMINARY MARKSMANSHIP INSTRUCTION
    2. 7-8. PHASE II, BASIC GUNNERY

    Section III. TRAINERS' CERTIFICATION

    1. 7-9. TRAINING BASE
    2. 7-10. CERTIFICATION OUTLINE

  9. APPENDIX A. 40-mm Grenade Launcher, M79

  10. APPENDIX B. Unit Training Program

  11. APPENDIX C. Proficiency (Performance) Examination

  12. APPENDIX D. Range Safety

  13. REFERENCES

  14. GLOSSARY

  15. AUTHORIZATION LETTER

    *This publication supercedes FM 23-31, 1 May 1972: and rescinds DA Form 2946-R, JUL 74.



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