OPERATOR’S MANUAL, SUBMACHINE GUN, 5.56-MM: PORT FIRING, M231, Plus 500 free US military manuals and US Army field manuals when you sample this book
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a. Type of Manual: Operator’s manual.
b. Model Number and Equipment Name: M231 firing port 5.56-mm submachine gun (firing port weapon).
c. Purpose of Equipment: To provide personnel inside vehicle a suppressive fire capability while in the mounted role. Weapon can be removed for field use under combat emergency conditions. The weapon is not authorized for off-vehicle use during training.
CHAPTER 1. INTRODUCTION
Section I General Information 1-1
Section II Equipment Description 1-3
CHAPTER 2. OPERATING INSTRUCTIONS
Section I Description and Use of Operator’s Controls . 2-1
Section II Preventive Maintenance Checks and Services (PMCS). 2-5
Section III Operation Under Usual Conditions . 2-21
Preparation for Firing-Clean and Lube 2-22
Installation on M2 Infantry Fighting Vehicle 2-25
Loading . 2-25
Remedial Action 2-34
Clearing Your Weapon 2-37
Section IV Operation Under Unusual Conditions . 2-39
CHAPTER 3. MAINTENANCE INSTRUCTIONS
Section I Lubrication Instructions. 3-1
Section II Troubleshooting Procedures. 3-3
Section III Maintenance Procedures 3-21
Field Strip . 3-26
Reassembly of Firing Port Weapon 3-51
Functional Check 3-56
CHAPTER 4 AMMUNITION. 4-1
APPENDIX A REFERENCESA-1
APPENDIX B COMPONENTS OF END ITEM (COEI) AND
BASIC ISSUE ITEMS (BII) LISTSB-1
APPENDIX C ADDITIONAL AUTHORIZATION LIST (AAL)C-1
APPENDIX D EXPENDABLE/DURABLE SUPPLIES AND
MATERIALS LIST (EDSML) . D-1