I was lucky enough to have mine re-finished by a local chap sadly since passed of the big C (RIP).
He was AirSoft mad and modded EVERYTHING !!

Fully blasted back to bare and re coated with a matt black similar to Ceracote but 3 times as tough he told me after its been allowed to fully cure, and true enough its worn a little but still 100% intact without a chip.
Apparently the US used it on their Helicopters somehow ..

Looks damn good though
Got mine via the only Man on here that counts for Collectable Air (Anything) Lawrie Aramaturda..

What a top chap he is with Absoloute knowledge and a real gent to boot.

Check out the below i need one but I'm not paying that...
https://www.youtube.com/watch?v=jnD4lgMXxwU