Ran across this product for gunsmithing. My other hobby <grin>

https://molyresin.com/

If you google "Moly Resin" there are a lot of articles and experiences using the product. Colors are of course, somewhat limited and very tactical !

however, it is easier to apply and doesn't require specialized equipment Just a FYI in case this is an approach someone has a need for.

Anyone here used it for anything?

from the home page:
Moly Resin™/Norrell’s Moly Resin™ is a product trademark of John Norrell Inc. Moly Resin™ is a thermally cured phenolic coating initially developed for aluminum AR-15/M-16 receivers and stainless steel sound suppressors. Today, Moly Resin™ is used on all metals throughout the firearms industry by gun shops, firearm parts manufacturers, start-up manufacturers, gunsmith schools, home DIYers, and law enforcement agencies for ordnance usage on equipment and weapons. The low temperature activated catalyst hardens and bonds the coating to all metals to create a hard, durable, chemical and a heat resistant state-of-the-art firearm finish. Our goal is to provide an array of popular colors that match closely to those being currently used in the firearms industry and military, as well as, vintage colors for special firearm restoration projects. The application process is relatively simple and is based on the use of an inexpensive air brush followed by curing in an oven.