Learn how to lubricate the FN SCAR assault rifle from a professional gunsmith at Brownells. You will need an oil/CLP and a grease. You can use Lubriplate grease or better yet Weapon Shield Grease. The FN SCAR manual specifically states, DO NO OIL or LUBRICATE the Gas Piston, Gas Regulator or Gas Block. Doing so could damage the rifle.
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