Manual
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aligned with the slots on the Extractors. Any further Extractor disassembly or maintenance
should be conducted only by an experienced Armorer or Gunsmith. Clean and lightly
lubricate all surfaces of the Bolt and Bolt Carrier Assembly in order to maintain proper
functioning. Reassemble Bolt Carrier Group in reverse order. Be certain to have the
extractors in the lowered position in order to hook the top of the bolt into the carrier. The
cam pin may then be pressed in to hold the bolt. The extractors must then be pushed into
the up position to allow the insertion of the bolt carrier group into the receiver.
Switching the Charging Handle for Left or Right Hand Use
The RFB is a totally ambidextrous design. All necessary controls can be accessed by either
a right handed or left handed shooter, except the Charging Handle, which can be mounted
on either the left or right side of the Bolt Carrier during reassembly. It may be advisable to
mount the charging handle on the strong side or dominant hand side to prevent obstructing
the view of the target.
To switch the charging handle, pull out the forward assembly pin and lower the handguard.
Remove the charging handle by pulling it straight out. Insert the charging handle on the
side you prefer, close the handguard, align the assembly pin hole with the hole in the gas
block, and press in the pin.
Figure 45: The Charging handle is easily moved to either side
Disassembling the Gas System
To remove the Gas Piston for cleaning, first ensure that the rifle is cool and unloaded. Next,
completely disassemble the rifle as you would for normal maintenance by removing the Top
Cover, Carrier Channel, and Ejection Chute. The Gas Piston is now ready for removal.
Gently pry the piston backwards to its fully open position.
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Figure 46: The piston in its open position
Twist the Gas Piston 60 degrees to align the internal lugs with the slots cut into the gas
head.
Figure 47: To remove the piston, rotate it 60 degrees and pull it from the gas head
Wiggle and pull the Gas Piston free from the Gas Head. Do not use excessive force as this
may cause damage to the gas ring.