Weapon Cannot Be Zeroed

Step 1. Bent or bulged rifle barrel (1).

Replace rifle barrel assembly (1 ).

M16a1 Bent Barrel

Step 2. Barrel assembly out of alignment with rear sight on upper receiver

Align barrel and upper receiver (p 3-33). Step 3. Corroded front (2) or rear (3) sights.

Disassemble, . clean, . and lubricate.

12. FAILURE TO CYCLE WITH SELECTOR LEVER SET ON AUTO. Step 1. Broken automatic sear (1) or spring (2)

Replace automatic sear assembly (1). Step 2. Faulty selector lever (3).

Replace selector lever (3). Step 3. Short recoil.

See malfunction 11.

Military Ecg
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