I have a Saiga AK-47. And on this rifle is a dust cover with p-rail on it. I would like to trade my dust cover with the p-rail on it. For a dust cover without a p-rail on it. I am having a hard time finding a new dust cover for my Saiga. Help! This is the one part that is hard to find. The dust cover, I have found out is not the best place to put a scope. All so, where is the best store or gunsmith in Portland for my Saiga?