Corrective Action

Step 5. Check for looseness between Tower Portion (11) and Tube Portion (12). If looseness exists, notify Direct Support Maintenance.

Gun Barrel Failure

Step 1. Failure to chamber malfunction is characterized by a round of ammunition not fully seating in the barrel because the bolt rides under the round. The unchambered round usually exhibits a damaged/bent condition similar to the illustration.

Several conditions can cause the round to not fully chamber and should be diagnosed in the following order:

a. Check for a spent cartridge case in the bottom of the receiver which would not allow the bolt to fully chamber a round. If a spent cartridge is found in the bottom of the receiver, refer to failure to extract and failure to eject malfunction troubleshooting procedures.

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