Duracoat is not durable, does chip, does not enhance lubricity and DOES NOT stop rust & corrosion. Some really cool colors but NOT designed for harmonics experienced by firearms.
When you go to professionals like KG Gun finishing, Black T, Bearcoat or NP-3 you get a superior finish. Done properly, you won't have to ever do it again.
Bearcoat is fast, durable and offers a lifetime warranty .......you get what you pay for !