rust prevention is such a fun subject.i always thought WD-40 contained high levels of alcohol as the ingrediant to displace water. i was thinking of going over to gander mountain and getting the teflon coat on one of my guns but im a little iffy?. my local auto paint guy said he can powder coat my barrels in any color for like 50$. one of my local gun dealers i know just uses spray paint on his pump gun barrels. he swears its the same as those camo coated barrels. there was a guy on here a couple months back giving away cans of special rust spray. i have used the can up and so far so good on everything but i need more time to see if it holds up. supposedly its the best there is. it smells kinda like apples and is non toxic i believe. this is the site www.eurekafluidfilm.com