Crew-Served Machine Guns

 

Publication Title:                   Crew-Served Machine Guns
Publication/revision date:    31 JAN 2003
Field Manual:                        FM 3-22.68
   Supersedes:                      FM 23-67, 29 FEB 1984, FM 23-14, 26 JAN 1994
Distribution Restriction:       Approved for public release, distribution unlimited (public domain manuals)

Contents:
CONTENTS
COVER

PREFACE

CHAPTER 1. M249 MACHINE GUN
Section
I. Description and Components

1-1. Description

1-2. Components

1-3. Ammunition

1-4. Blank Firing Attachment


Section
II. Maintenance

1-5. Clearing Procedures

1-6. General Disassembly

1-7. Inspection

1-8. Cleaning, Lubrication, and Preventive Maintenance

1-9. General Assembly

1-10. Function Check

1-11. Maintenance Procedures

1-12. Maintenance During Nuclear, Biological, Chemical Conditions


Section
III. Operation and Function

1-13. Operation

1-14. Loading

1-15. Unloading

1-16. Cycle of Functioning

1-17. Sights

1-18. M122 Tripod

1-19. Bipod Operations

1-20. Vehicular Mount

1-21. Tripod Positioning


Section
IV. Performance Problems and Destruction

1-22. Malfunctions.

1-23. Stoppages

1-24. Immediate Action

1-25. Remedial Action

1-26. Destruction Procedures

CHAPTER 2. M60 MACHINE GUN
Section
I. Description and Components

2-1. Description

2-2. Components

2-3. Ammunition

2-4. Blank Firing Attachments, M13 and M13A


Section
II. Maintenance

2-5. Clearing Procedures

2-6. General Disassembly

2-7. Inspection

2-8. Cleaning, Lubrication, and Preventive Maintenance

2-9. General Assembly

2-10. Function Check

2-11. Maintenance Procedures

2-12. Maintenance During Nuclear, Biological, Chemical Conditions


Section
III. Operation and Function

2-13. Operation

2-14. Loading

2-15. Unloading....

2-16. Cycle of Functioning

2-17. Sights

2-18. M122 Tripod

2-19. Bipod Operations

2-20. Vehicular Mount

2-21. Tripod Position


Section
IV. Performance Problems and Destruction

2-22. Malfunctions.

2-23. Stoppages

2-24. Immediate Action

2-25. Remedial Action

2-26. Destruction Procedures

CHAPTER 3. M240B MACHINE GUN
Section
I. Description and Components

3-1. Description

3-2. Components

3-3. Ammunition

3-4. Ammunition Adapter

3-5. Blank Firing Attachment


Section
II. Maintenance

3-6. Clearing Procedures

3-7. General Disassembly

3-8. Inspection

3-9. Cleaning, Lubrication, and Preventive Maintenance

3-10. General Assembly

3-11. Function Check

3-12. Maintenance Procedures

3-13. Maintenance During Nuclear, Biological, Chemical Conditions


Section
III. Operation and Function

3-14. Operation

3-15. Loading

3-16. Unloading

3-17. Cycle of Functioning

3-18. Sights

3-19. M122A1 Tripod

3-20. Bipod Operations

3-21. Tripod Operations


Section
IV. Performance Problems and Destruction

3-22. Malfunctions

3-23. Stoppages

3-24. Immediate Action

3-25. Remedial Action

3-26. Stuck Barrel

3-27. Destruction Procedures

CHAPTER 4. MACHINE GUN MARKSMANSHIP TRAINING
Section
I Introduction

4-1. Objectives

4-2. Training Phases

4-3. Training Strategy

4-4. Training for Combat Conditions


Section
II. Preliminary Gunnery

4-5. Marksmanship Fundamentals

4-6. Firing Positions

4-7. Night Fire

4-8. Nuclear, Biological, Chemical Fire

4-9. Engagement of Moving Targets

4-10. Traverse and Search

4-11. Direct Lay

4-12. Application of Fire

4-13. Fire Adjustment

4-14. Effects of Wind

4-15. Fire Commands

4-16. Dry-Fire Exercise

4-17. Multipurpose Machine Gun Range Layout

4-18. Basic Machine Gun Target

4-19. Target Analysis


Section
III. Crew Drill

4-20. Preparation

4-21. Crew Equipment

4-22. Formation (Bipod or Tripod Mounted)

4-23. Cross-Training Procedures

4-24. Inspection for Bipod Fire

4-25. Placement into Action (Bipod)

4-26. Procedures for Changing the Barrel (Bipod)

4-27. Removal from Action (Bipod)

4-28. Inspection for Tripod Fire

4-29. Placement into Action (Tripod)

4-30. Procedures for Changing the Barrel (Tripod)

4-31. Removal from Action (Tripod)

4-32. Prone Position


Section
IV. Basic Gunnery for the M249, M60, and M240B Machine Guns

4-33. Zero

4-34. Field Zero

4-35. 10-Meter Firing

4-36. 10-Meter Conduct of Fire

4-37. 10-Meter Firing, Qualification

4-38. Transition Fire

4-39. Transition Conduct of Fire, Bipod

4-40. Transition Fire, Limited Visibility

4-41. AN/PVS-4 Zero

4-42. Qualification Standards

CHAPTER 5. COMBAT TECHNIQUES OF FIRE
Section
I. Characteristics of Fire

5-1. Trajectory

5-2. Maximum Ordinate

5-3. Cone of Fire

5-4. Beaten Zone

5-5. Danger Space


Section
II. Classes of Fire

5-6. Respect to the Ground

5-7. Respect to the Target

5-8. Respect to the Machine Gun


Section
III. Application of Fire

5-9. Types of Targets

5-10. Distribution, Concentration, and Rate of Fire

5-11. Target Engagement

5-12. Target Engagement during Limited Visibility

5-13. Overhead Fire

5-14. Defilade Positions


Section
IV. Predetermined Fires

5-15. Terminology

5-16. Range Card


Section
V. Fire Control

5-17. Methods of Fire Control

5-18. Fire Commands


Section
VI. Range Determination

5-19. Range Estimation

5-20. Lateral Distance Measurement


Section
VII. Advanced Gunnery

5-21. Objectives

5-22. Organization

5-23. Ammunition

5-24. Firing Sequence

5-25. Alternate Firing Positions

5-26. Movement, Speed, and Alignment

5-27. Reloading

CHAPTER 6. TRAIN-THE-TRAINER PROGRAM
6-1. Mission-Essential Task List

6-2. Trainer Assessment

6-3. Assistant Trainers and Cadre Coaches

6-4. Program Phases

6-5. Training Tasks

6-6. Trainer Certification Program

APPENDIX A. UNIT TRAINING PROGRAM
APPENDIX B.
PROFICIENCY (PERFORMANCE) EXAMINATION
APPENDIX C. AERIAL DEFENSE
APPENDIX D.
RANGE SAFETY
APPENDIX E. EMPLOYMENT
APPENDIX F. TRAINING AIDS AND DEVICES
APPENDIX G. ADVANCED OPTICS AND LASERS
APPENDIX H. 10-METER BORE LIGHT/25-METER TARGET OFFSETS

GLOSSARY
REFERENCES
AUTHENTICATION

 

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