Yes I do them myself Frank, that's not my Glock, did for someone else. I do quite a few for cops. AR's, pistols, etc. I did one for a cop that a guy wouldn't stop and instead of shooting him when he tried to run him down, he smashed the front window out with his 1911 lol. That window did some damage to his pistol.
I did an AR for a woman detective, OD Green and Graphite Black, she was hot lol.
The other guns I posted like my new 6BRX I did in Burnt Bronze. I have also been mixing colors. It isn't cheap to buy the cerakote, $95 per quart, but I can do a lot with a quart. I've got about 15 different colors.
And got need equipment to do them. A good compressor with an air dryer, HVLP spray guns with regulators, sandblast cabinet, etc.
Here is the process:
Completely disassemble gun.
Degrease all parts.
Sandblast parts using aluminum oxide.
Degrease again.
Gas out parts in oven to burn off any residual oils or impurities.
Spray parts.
Bake in oven, different for metal vs plastic.
Reassemble gun.