Care and Maintenance Instructions

19
AAC — BLACK RIFLE MANUAL
FIGURE 33
FIGURE 32
18. Apply a light application of Rem Oil
™
to the
outside of the barrel with a soft clean cloth.
WARNING! After cleaning, make sure the barrel is free
of obstructions, see the “Checking for and Removing a
Barrel Obstruction,” section of this manual. Discharging
the firearm with a dirty and/or obstructed barrel may
cause property damage, personal injury and/or death.
CLEANING THE UPPER RECEIVER
WARNING! Unload the firearm before cleaning. Look
into the ejection port and visually check the chamber
and magazine to make sure there are no cartridges in
the firearm. Always wear eye protection when handling,
disassembling and reassembling the firearm. Failure to
follow these instructions may cause property damage,
personal injury and/or death.
WARNING! Check to ensure that there is no looseness
between the Barrel and the Upper Receiver. If you
detect any movement by twisting or pulling the barrel
relative to the receiver, the Barrel Nut must be re-
torqued. Have the rearm serviced an AAC Authorized
Repair Center before further use. Failure to follow
these instructions may lead to firearm malfunctions
which could result in property damage, serious
personal injuries and/or death.
1. Always keep the firearm pointed in a safe direction.
2. Remove the magazine, pull and hold the bolt fully
rearward to inspect the chamber. See Figure
11. Visually and physically verify the Chamber is
completely unloaded. See the section “Clearing/
Unloading Your Rifle”.
3. Disassemble the firearm per the instructions in the
“Disassembling Your Firearm,” section of this manual.
4. Using a “CLP“ type product, clean all areas of
the Upper Receiver (inside and out) of Powder
Fouling, Corrosion and Dirt. To avoid scratching
and damaging the finish of your Aluminum Upper
Receiver, never use a wire brush or any type of
abrasive cleaner. A Toothbrush works well for
loosening buildup, and will not scratch the Receiver.
5. Clean the Chamber by dipping the larger Chamber
Brush in CLP. Use at least 5 plunge strokes and 3 -
360° clockwise rotations when cleaning the Chamber.
6. Swab out the Bore as described previously to remove
contaminated solution or loosened fouling.
7. Wipe all components clean and dry
8. Inspect all components for excessive wear, corrosion
or mechanical damage. Have your AAC Authorized
Repair Center replace any worn or defective parts
before discharging the firearm again.
CLEANING THE BOLT, BOLT
CARRIER & COMPONENTS
WARNING! Unload the firearm before cleaning. Look
into the ejection port and visually check the chamber
and magazine to make sure there are no cartridges in
the firearm. Always wear eye protection when handling,
disassembling and reassembling the firearm. Failure to
follow these instructions may cause property damage,
personal injury and/or death.
1. Always keep the firearm pointed in a safe direction.
2. Remove the magazine, pull and hold the bolt fully
rearward to inspect the chamber. See Figure
11. Visually and physically verify the Chamber is
completely unloaded. See the section “Clearing/
Unloading Your Rifle”.
3. Disassemble the firearm per the instructions in the
“Disassembling Your Firearm,” section of this manual.
4. Use the Bore Brush (wet with CLP) to clean carbon
and powder residue from around the Gas Tube. See
Figure 32.
5. Run a Pipe Cleaner through the Gas Tube.
6. With a brush (wet with CLP) clean the Bolt Locking
Lugs, Bolt Rings, Firing Pin and Bolt Cam Pin. See
Figure 21.
7. With a non-abrasive brush (wet with CLP) clean the
extractor spring. See Figure 33.
8. Wipe all components clean and dry.
9. Inspect all components for excessive wear, corrosion
or mechanical damage. Have your AAC Authorized
Repair Center replace any worn or defective parts
before discharging the firearm again.
3. Disassemble the firearm per the instructions in the
“Disassembling Your Firearm,” section of this manual.
4. With the Bolt removed from the Bolt Carrier and the
Extractor installed, place a few drops of CLP around
the Ejector to form a puddle. See Figure 34.
5. T ake a fired or dummy cartridge and place it under
the lip of the Extractor.
6. With a rocking motion, press the cartridge down
against the Ejector. The Ejector is spring loaded
and some resistance will be felt.
7. Depress the Ejector with the cartridge until it stops
against the bolt face.
8. Allow the Ejector to fully extend by releasing
pressure from the cartridge.
9. Repeat steps 6 – 8 several time, until the Ejector
moves smoothly. Replace the CLP frequently.
10. Wipe all components clean and dry.
11. Inspect all components for excessive wear, corrosion
or mechanical damage. Have your AAC Authorized
Repair Center replace any worn or defective parts
before discharging the firearm again.
NOTE: When checking the Ejector, the Ejector should
be replaced if it is chipped, cracked, bent, blunted
or has little return force. Have a damaged Ejector
serviced by an AAC Authorized repair center.
WARNING! When checking the bolt, look for cracks or
fractures, especially in the Cam Pin hole area. A bolt
showing cracks or fractures should be replaced. Use
of a cracked or fractured bolt may cause property
damage, personal injury and/or death.
WARNING! When checking the Bolt Face, the bolt
should be replaced if any pitting extends into the
firing pin hole. Use of a pitted Bolt Face may cause
property damage, personal injury and/or death.
WARNING! When checking the Cam Pin, it should be
replaced if it is cracked or chipped. Use of a damaged
Cam Pin may cause property damage, personal injury
and/or death.
NOTE: When checking the Firing Pin, it should
be replaced if it is bent, cracked, too blunted or
too sharp. Misfires often result from the use of a
damaged Firing Pin.
NOTE: When checking the Firing Pin Retaining Pin,
it should be replaced if it is bent, or badly worn, it
should be replaced. Never use a “Cotter Pin” as a
substitute for a real Firing Pin Retaining Pin. Cotter
pins are not made of heat treated spring steel and
their round head shape may cause damage to the
Upper Receiver.
NOTE: When checking the Extractor and Extractor
Spring, the Extractor should be replaced if it is
chipped or has broken edges in the area of the lip
that engages the cartridge case head. The Extractor
Spring should be replaced if it is cracked or broken.
The Extractor Spring O-Ring should be replaced if it is
crack or broken.
CLEANING / LUBRICATING
THE EJECTOR
WARNING! Unload the firearm before cleaning. Look
into the ejection port and visually check the chamber
and magazine to make sure there are no cartridges in
the firearm. Always wear eye protection when handling,
disassembling and reassembling the firearm. Failure to
follow these instructions may cause property damage,
personal injury and/or death.
NOTE: Disassembly of the Ejector is not recommended.
Make sure your firearm ejects empty cases efficiently
by following these steps when cleaning:
1. Always keep the firearm pointed in a safe direction.
2. Remove the magazine, pull and hold the bolt fully
rearward to inspect the chamber. See Figure
11. Visually and physically verify the Chamber is
completely unloaded. See the section “Clearing/
Unloading Your Rifle”.