Lantac misrepresented feature - LANTAC USR Forged Upper Receiver

I was looking for an upper with an undersized ID for the barrel where a heat gun us required for installation. The same as with JPs ctr02 and BCM I believe. I emailed Lantac and received an email back saying that all their receivers are undersized as I wanted. I placed an order for this and received the upper which did not require added heat for installation. The ID is at the low end of mil spec tolerances but there is still some slop. Other than that I have no complaints. I also like that the thing is black without any white writing such as "Lantac" written across the side. The misrepresentation by Lantac deserves two stars off though.