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I get humor...when it's funny. Repeating the same thing ad nauseam doesn't qualify. Especially when there's no indication it was a joke.
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Well what you or I find funny or not funny has no bearing on what another may or may not find funny.
The question was actually silly for anyone that knows anything about paints and coatings, cerakote for all intensive purposes in the amount used to coat receivers weighs virtually nothing to the gun.
Now if we are talking about painting a 747 then it makes a big difference, I remember a time back in the 80's that airlines stopped painting their airplanes because the weight of the type of paint they had to use for the environment added enough weight that the planes increase fuel consumption between 3-7% which added a hell of a lot of costs to flights.
My partner and I actually did some weight testing when we started manufacturing suppressor tubes on anodizing the tubes, we have also coated tubes and checked before and after weights, which didn't register on anything except the most sensitive scale systems and it was like 1/1000th of an ounce. I suspect a cerakote on an upper and lower adds even less that 1/1000th of an ounce to the weight of those parts.
Cerakote is a thin film coating technology.