Operations Manual

.223 CALIBER
THOROUGH CLEANING
upper receiver
Be sure to include:
CLEAN WITH RBC
(Rifle Bore Cleaner)
• All areas of powder fouling, corrosion, dirt and rust
• Bore & chamber
• Locking lugs
• Gas tube
bolt carrier group
Be sure to include:
• Outer & inner surfaces of bolt carrier
• Carrier key
•Firing pin recess and firing pin
•Firing pin hole (Use pipe cleaner there)
• Carbon deposits & dirt from locking
lugs
• Areas behind bolt ring and under lip
of extractor
14
Use a worn bore brush to get outside surface
of protruding gas tube (get sides and bottom
from bottom of receiver)
START AT
RECEIVER
GO RIGHT THROUGH THE
COMPENSATOR OR END OF BARREL.
BORE BRUSH (DON’T REVERSE
DIRECTION WHILE IN BORE)
BARREL LOCKING LUGS AND GAS TUBE
WORN BORE
BRUSH
GET THAT LAST
1/16” TOO!
CARRIER KEY
UR-19
BT-02
BT-16
BT-08
BT-07
BT-03
BT-17
BT-19
BT-14
Extractor Spring Assembly
Extractor
Extractor
Pin
Charging Handle Assembly
Cam Pin
Bolt Carrier
w/Key &
Screws
Firing Pin
Firing Pin
Retaining Pin
Bolt