So I bought a blemished stripped upper form Palmetto State Armory. It came within a couple days and I can't find a thing wrong with it.... EXCEPT, it doesn't have m4 feed ramps cut into it. Now I know this is probably a stupid question, but do barrels in rifles with m4 feedramps have cuts in them too? If so, can I still use such a barrel? Or do I have to find a barrel that is specifically designed for a weapon without M4 feedramps. It doesn't bother me that I don't have M4 ramps, I just want to know what types of components I need that will work together.
Thanks.