Binding may be caused by uneven alignment of the two spring pins located under the track rail. Ensure that bolt carrier does not contact spring pins.
c. Slide bolt and carrier assembly (5) across the track rails to make sure it moves freely and does not bind. If binding occurs, replace defective parts.
3. INSTALL BOLT AND TRACK ASSEMBLY (WP 0053 00).
4. PERFORM AUTO GUN RECEIVER MANUAL CYCLE CHECK (WP 0008 00).
5. INSTALL AUTOMATIC GUN FEEDER (WP 0026 00). END OF WORK PACKAGE
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