Operating and Safety Manual

CLEANING THE UPPER RECEIVER… (cont’d.)
30
CHECK THE EXTRACTOR AND EXTRACTOR SPRING: If the Extractor is chipped, or has
broken edges in the area of the lip that engages the cartridge rim, it should be replaced.
Check that the rubber insert is inside the Extractor Spring. Clean o any Carbon buildup
or powder residue.
NOTE: The design of the Ejector makes its disassembly for
cleaning somewhat impractical (i.e. we don’t recommend it).
Make sure your Bushmaster ejects empty cases eciently
by following these steps on a monthly basis
(more frequently if firing blanks)
.
1. With the Bolt removed from the Bolt Carrier and the
Extractor installed, hold it as shown, and dribble a few
drops of CLP around the Ejector to form a puddle.
2. Take a fired or dummy case and place it under the lip of the Extractor.
With a rocking motion, press the case down against the Ejector. Since
the Ejector is spring loaded, some resistance will be felt. Press on the
case until it stops against the bolt face. Ease o with your thumb
slightly and press down again. Repeat several times. Replace the CLP frequently.
Once the spring action of the Ejector is smooth and strong, dry o any excess lubricant.
CLEANING/LUBRICATING THE EJECTOR…
CLEANING THE BOLT, BOLT CARRIER & COMPONENTS…
Extractor
Rock Empty Case
Against Ejector
To Lubricate
Ejector