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Posted: 4/7/2015 10:13:50 AM EDT
| Just cut the FSP of my new build as to maintain the pinned setup while installing a FF rail. Finished it smooth and hit with BBQ paint. Now paranoia set in. I feel that if any oil comes into contact with the gas block it will take the paint off leaving the bare metal. I doubt the mil-spec FSP are stainless, so I imagine rust could be an issue. Will all in spec FSP fit the same pin holes if mine rusts and needs replacement? |
Paint will burn off anyway. 
One method to treat metals that are heated - like, exhaust manifolds - is to wipe on transmission fluid when hot. It cooks off and "blues" the carbon steel to prevent rust. Another method if paint is preferred is to use ceramic header paint. Heat will catalyze and set it. Any - any - steel part on a gun will eventually need maintenance to prevent rust. Even stainless will rust. It's stain - less, not rust - proof. And that's why the aluminum is anodized, too, or it would corrode constantly. Polymers are known to degrade in sunlight or by harsh solvents. In other words, you shoot it you keep it wiped down and oiled. Otherwise put it in a nitrogen filled display case. Otherwise it will deteriorate just like the one pictured in the hands of a Montagnard given to him 45 years ago. It still shoots. |
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