SIG SAUER SIG556 - Manual (Page 85)

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9.1 Cleaning
The SIG556 ® rifle must be cleaned after each shooting session or whenever performance is suspect. Clean the rifle as
follows:
1. Unload the weapon per Section 5.0;
2. Field strip the weapon per Section 7.0;
3. Clean the barrel and chamber from the rear;
4. Clean other parts of the rifle, using care to remove carbon and firing residue. Pay particular attention to the operating
rod, gas valve, and chamber areas;
5. Lightly lubricate areas of metal contact with a high quality firearms lubricant or grease, paying particular attention to
the bolt/bolt carrier, receiver rails, operating rod, and gas valve;
6. Apply a light coating of high quality firearms lubricant or grease to exposed metal surfaces to enhance corrosion
protection;
7. Reassemble the rifle per section 7.1; and
8. Perform a function check in accordance with section 7.2.
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