Specifications

TM 05539-IN
iii
HOW TO USE THIS MANUAL
INTRODUCTION
1. This manual contains operating instructions, maintenance procedures, emergency procedures, and troubleshooting proce-
dures for the 7.62 mm, M40A3/A5 Sniper Rifle. It is divided into five chapters.
2. This manual is written in work package format:
a. Chapters divide the manual into major categories of information (e.g., General Information, Equipment Descrip-
tion and Data, and Principles of Operation).
b. Each chapter is divided into work packages, which are identified by a 6-digit number (e.g., 0001 00, 0002 00, etc.)
located on the upper right-hand corner of each page. The work package page number (e.g., 0001 00-1, 0001 00-2,
etc.) is centered at the bottom of each page.
c. If a Change Package is issued to this manual, added work packages use the 5th and 6th digits of their number to
indicate new material. For instance, work packages inserted between WP 0001 00 and WP 0002 00 are numbered
WP 0001 01, WP 0001 02, etc.
3. Read through this manual to become familiar with its organization and contents before attempting to operate or maintain
the equipment.
CONTENTS OF THIS MANUAL.
1. A Warning Summary is located at the beginning of this manual. Become familiar with these warnings before operating or
maintaining the equipment.
2. A Table of Contents, located in the front of the manual, lists all chapters and work packages in the publication. If you can-
not find what you are looking for in the Table of Contents, refer to the alphabetical Index at the back of the manual.
3. Chapter 1, General Information, Equipment Description and Data, and Principles of Operation, provides general infor-
mation about the equipment, identifies the major components and systems, and describes how the components and sys-
tems work.
4. Chapter 2, Troubleshooting, which includes Troubleshooting Introduction, Troubleshooting Symptom Index, and Trouble-
shooting Procedures, provides symptoms and procedures pertaining to failures that could occur during operation of the
M40A3/A5 Sniper Rifle.
5. Chapter 3, Organizational Maintenance, includes Service Upon Receipt, Preventive Maintenance Checks and Services
(PMCS) Including Lubrication Instructions, General Maintenance Instructions, Cleaning the Weapon, and Preparation
for Storage and Shipment. This chapter provides procedures to maintain the M40A3/A5 Sniper Rifle.
6. Chapter 4, Intermediate Maintenance, provides Intermediate level maintenance procedures.
7. Chapter 5, Supporting Information, includes References, Expendable and Durable Items List, Tool Identification List,
Manufactured Items Illustrations, Quality Assurance Checklist, Repair Parts List (RPL) Introduction, and Repair Parts
List (RPL). This chapter provides information pertaining to references, components listing, expendable/durable supplies
and material list.
8. An alphabetical Index is located at the back of this manual.