I am building a rifle right now on a defiance action. Just chambered it a couple of days ago. I am going to have it black nitrided. I would like to have the bolt NP3 plated but don't want to wait for Robar to do it. I have one Defiance rifle so treated all ready and it has no rust or visible wear after many, many days afield in heavy brush and rock. I sure like it.
