(2) To remove the barrel from the receiver, close the cover assembly, depress the barrel locking lever with the left hand, hold the carrying handle with the right hand, lift up on the carrying handle, and push the barrel forward.
g. REMOVING THE GAS REGULATOR AND COLLAR. To remove the gas regulator and gas regulator collar, rotate the gas regulator lever between the normal and maximum positions. Place the tip of the spring guide rod into the notch at the front left of the gas plug (NORMAL position of lever) and hold the guide firmly in the notch.
Holding the spring guide rod in position, turn the gas regulator lever toward the NORMAL position and beyond until the gas regulator collar can be removed.
DO NOT ATTEMPTTO PRY THE GAS REGULATOR COLLAR WITH THE TIP OF THE SPRING GUIDE ROD. THIS COULD BREAK OFF THE TIP OF THE SPRING GUIDE ROD.
To remove the gas regulator, grasp it at the bottom and pull it from the gas plug.
h. REMOVING THE HANDGUARD. The handguard group consists of the handguard, handguard retaining pin, and cleaning equipment retaining clip. Push the handguard retaining pin to the left using a cartridge or the spring guide rod; then pull down on the handguard.
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