PREVENTIVE MAINTENANCE PROCEDURES
2.4.1 GENERAL MAINTENANCE.
1. Ensure that all bearing surfaces and exposed parts, particularly those listed below, are clean and
properly lubricated:
Front and rear barrel bushings
Bolt and bolt carrier
Mainspring housing
Trigger assembly
Transfer bar assembly
2. Inspect all parts for looseness and tighten or replace, as necessary.
a. Inspect all parts (especially along welds) for cracks or damage and replace, if necessary.
b. Each time the rifle is assembled for firing ensure that the barrel, chamber, and locking lugs of the
bolt are free of excess oil. When possible, an operational check using ten dummy rounds should
be performed. Insert the dummy rounds into a magazine and load the magazine into the rifle.
Manually operate the bolt carrier to the rear and forward, making sure the cartridges feed, extract,
and eject properly. If the rifle is not functioning correctly, refer to the Section on Troubleshooting.
c. Refer to Table 2-3 for Malfunction and Immediate Action Troubleshooting.