Brownells has a free shipping on Aluma Hyde II promo running right now. You can stack with an additional discount code, TA10 = 10% off 150 or more. GIFT10 = $10 off $100.
https://www.brownells.com/tools-cleaning/paint-metal-prep/paint-finishing/aluma-hyde-ii/For what it's worth there's a thread where a guy bought a can on Amazon and had problems and then posted that one Brownells rep said there was a problem with some of the cans.
https://www.ar15.com/forums/Armory/Aluma-Hyde-is-putting-out-bad-cans-confirmed-by-Brownells/19-548639/
Another user here, @Baron_Von_Savant , responded in that thread:
Originally Posted By Baron_Von_Savant:
Let me just start by apologizing on behalf of individual that gave you that information, it was incorrect. As the actual Aluma-Hyde II Tech Guy, I can confirm that there are currently no known issues with Aluma-Hyde II and that's not to say you didn't get a bad can, obviously you did and Brownells will take care of it. I use Aluma-Hyde II straight from inventory almost weekly in the Brownells studio and can assure you that Brownells is not knowingly sending out bad product to customers.
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Also, for those curious...In my experience, Aluma Hyde II, applied by spraying from the can directly on parts, as well as sponge applied, will adhere to all of the typical firearms finish surfaces if you clean them properly. Despite some reports of it not adhering to Cerakote, in my experience it will adhere to backed on Cerakote so long as you clean the Cerakote with 90% alcohol and let it cure once applied for at least a week. I also have had great results with spraying multiple colors onto mixing surface and custom blending colors for sponge application.