40-MM GRENADE LAUNCHER, M203 - BITS

1 HEADQUARTERS FM (FM 23-31) DEPARTMENT OF THE ARMY 40-MM GRENADE launcher , M203 FEBRUARY 2003 DISTRIBUTION RESTRICTION: Approved for public release; distribution is unlimited. *FM (FM 23-31) DISTRIBUTION RELEASE: Approved for public release; distribution is unlimited. _____ FIELD MANUAL HEADQUARTERS NO. DEPARTMENT OF THE ARMY Washington, DC, 13 February 2003 40-MM GRENADE launcher , M203 CONTENTS Page CHAPTER 1. INTRODUCTION 1-1. Training 1-2.

2 Combat CHAPTER 2. OPERATION AND FUNCTION 2-1. 2-2. 2-3. 2-4. Cycle of CHAPTER 3. DESCRIPTION AND MAINTENANCE 3-1.

3 3-2. Technical 3-3. 3-4. 3-5. Clearing 3-6.

4 General Disassembly ..3-13 3-7. Cleaning and 3-8. 3-9. General 3-10. Care and 3-11. Care and Handling Under NBC 3-12. CHAPTER 4. PERFORMANCE PROBLEMS AND DESTRUCTION 4-1.

5 4-2. 4-3. Immediate 4-4. Remedial *This publication supersedes FM 23-31, 20 September 1994, and rescinds DA Form 2946-R, July 1974. i FM Page 4-5.

6 Destruction CHAPTER 5. MARKSMANSHIP TRAINING Section I. Preliminary Marksmanship Training 5-1. Four Fundamentals of 5-2. Limited 5-3. NBC 5-4. Fire 5-5.

7 Dry-Fire 5-6. Sensing and Adjustment of 5-7. GRENADE launcher Range 5-8. Description of Range and Section II. Basic Gunnery 5-9. Zeroing the M203 GRENADE 5-10. Overall Qualification 5-11. Day Record 5-12. Day Record Fire Qualification 5-13. Mounting the AN/PVS-4 (Without the Rail System) ..5-32 5-14. Zeroing the AN/PVS-4 to the 5-15. Night Record 5-16. Night Record Fire Qualification CHAPTER 6.

8 COMBAT TECHNIQUES OF FIRE Section I. Advanced Gunnery 6-1. Characteristics of 6-2. Classes of 6-3. Range 6-4. Predetermined 6-5. Types of 6-6. Section II. Fire Control 6-7.

9 Methods of Fire 6-8. Fire Section III. Application of Fire 6-9. Suppressive 6-10. Overwatch 6-11. Area and Point 6-12.

10 Target Engagement ..6-17 6-13. Limited 6-14. Overhead CHAPTER 7. TRAIN-THE-TRAINER PROGRAM Section I. Organization 7-1. 7-2.