Someone on here posted an AR website called CBC INDUSTRIES.
CBC INDUSTRIES - AR-15 Upper Assemblies, AR-15 Barrels, & AR-15 Parts
I had never heard about them before reading about them on here. I went to their site and was surprised at how well built their products seem to be, at very low prices.
There is no telling how many companies out there that are similar to CBC that offer great products at very low prices. I will say this, I will be buying some parts from CBC INDUSTRIES! They seem like a "MOM & POP" store and I like that!