Coating
I do a lot of Dura, Gunkote and Ceracoat on many types of firearms and engine parts. I can tell you that each one has it's strenghts and weakness. If you doing it as a one time project then Dura coat is most likely the best. You have to make sure you follow the directions and don't take any short cuts or it will look like you took a short cut. Blast with 120 aluminum oxide only, spray in light coats and let cure the proper time. I have the ovens and all the other equipment so do a lot of Gunkote and gear coat and recommend that for any firearm that is going to be subject to lots of heat i.e AR15's, M4's and any other stuff the PD's and State Police throw at me from time to time.
Have fun with it, take your time, send us some pics when your done, or you could send it to the gentleman who made the offer for $90.00...thats a good price and that's what I would charge too.
Semper Fi
Guns - out