[Mike]

I get what your saying on this but does it matter how it left the factory. It would be hard to say what was done with it after unless there was a paper trail somewhere. If you bought 2 lowers in 88 built one and put the other away and then changed the parts from one to the other after the ban, there by making the one just built an illegal post ban build how could anyone know that.
I really don't get that part of the law. I would think anything dated pre ban would be vary hard to prove otherwise.