This one will be a short post. I've applied Dura Coat to a 1911 slide of mine as well as a M4 I'm working on assembling (proper word in lieu of "building"...AR's are model kits for adults)...yeah I'll post about the M4 later still working on the write up. Anyways for any of you who have thought about trying out Dura coat I highly recommend trying it out...its rather easy to apply and mix. I used a cheap air brush to put it on and it dried fairly quickly. I really like it because I didn't have to blast the AR rec prior to applying it. We'll see how durable it is in the years to come but it seems ok for now.