SIG SAUER SIG716 Rifle - Manual (Page 66)

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8.3 cleaning the bolt
a cotton patch or a soft toothbrush and solvent can be used to complete the following steps:
1. clean all fouling from around the bolt locking lugs.
2. clean all fouling from bolt body
3. clean extractor and the extractor slot in the bolt.
4. use pipe cleaner to clean firing pin channel.
8.4 cleaning the bolt carrier
1. clean all fouling from bolt carrier body.
2. clean the bolt channel in the front of the carrier with a brush or cotton swabs.
8.5 action spring and Receiver extension
1. clean with rag and solvent.
2. Wipe dry.