i heard its a plating that goes onto the gun that cost alot of money but companies like planet eclipse can produce the aura parts in large quantities so they can sell them for cheaper unlike getting your whole gun customly plated that will cost alot more
There's a company in New England that does it. It is crazy expensive. IIRC, it was something crazy like $3000 for the bath to be set up. There was a thread on here a while back with a bunch of us who were trying to get together and send all of our parts in so we could make the cost of doing so much easier on our wallets. That fell to the wayside, the guy who was organizing everything kinda dropped off the face of the earth. Plus apparently we weren't allowed to organize something in a thread, it had to be done by PM. I've talked to another company that doesn't do it, but knew a lot about it. The rumors of the bath still eating people's parts is just that. A rumor. Just like anodizing, this plating had some casualties early on, but the technique is more than perfected. It's just stupid expensive.
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I believe it's called PVD (Physical vapor deposition). It's fairly inexpensive to do as can be seen by the very inexpensive jewelry and knives that sell for under $10 each that have this finish. I believe the more important issues are that you need to plate the parts with titanium and then run through this process. From the sounds of things it's fairly easy to do, but holding tolerances acceptable is more difficult and parts were ruined getting the knowledge. On things like knives where the plates don't have to be exactly precise it's cheap and easy. I'm not sure why it isn't more widespread in the paintball world. It seems like the knowledge is out there. I wouldn't doubt the finish isn't near durable enough for the BIG companies to adopt/warrant on a large scale. Then comes the time and effort to do on a small scale, which may not be justifiable if you ruin a few batches learning the process. This finish has been applies to many items outside the paintball world at a minimum price increase ($5-$10). It seems the problem is keeping acceptable tolerances rather than the cost of the process.