Warning

26 Ensure the cam pin is installed in the bolt

27 group or the rifle may explode while firing.

28 • Insert the bolt cam pin through the bolt carrier and into the bolt. Rotate the cam pin

29 1/4 turn right or left. Pull the bolt forward until it stops.

1

Drop in the firing pin from the rear of the bolt carrier and seat it.

4

Replace the firing pin retaining pin. Ensure the head of the firing pin retaining pin is recessed inside the bolt carrier. The firing pin should not fall out when the bolt carrier group is turned upside down.

6

Place the charging handle in the upper receiver by lining it up with the grooves in the receiver. Push the charging handle partially in.

8

With the bolt in the unlocked position, place the bolt carrier key into the groove of the charging handle.

9 10

Push the charging handle and bolt carrier group into the upper receiver until the charging handle locks.

11

Join the upper and lower receivers and engage the receiver pivot pin.

12 13

Ensure the selector lever is on safe before closing the upper receiver. Close the upper and lower receiver groups. Push in the takedown pin.

14

Install the handguards using the "buddy system."

15

Replace the sling.

16

(2) Reassembling the Magazine. To reassemble the magazine:

17

Insert the follower and jiggle the spring to install.

18 19

Slide the base under all four tabs until the base catches. Make sure the printing is on the outside.

20 2007. Function Check

21 A function check is performed to ensure the rifle operates properly. To perform a function check:

Place the weapon in Condition 4 (see paragraph 3002).

Pull the charging handle to the rear and release. Ensure the selector lever is on safe and pull the trigger. The hammer should not fall.

Place the selector lever on semi. Pull the trigger and hold it to the rear. The hammer should fall. Pull the charging handle to the rear and release. Release the trigger and pull again. The hammer should fall.

• Pull the charging handle to the rear and release. Place the selector lever on burst. Pull the trigger and hold it to the rear. The hammer should fall. Pull the charging handle to the rear three times and release. Release the trigger and pull again. The hammer should fall.

• Pull the charging handle to the rear and release. Place the selector lever on safe.

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