Expensive paper weight - Leapers UTG PRO 15in. Free Float Rail

Received the kit and barrel nut didn't fit. Contacted Leapers and sent me a new barrel nut and told me I had the wrong one. When discussing it I explained you don't release enough information one them to decide which one is correct. A gun smith of mine couldn't even figure out which system was for me with the information LEAPER provided.

Upon receiving the correct barrel nut and mount it. The upper receiver wouldn't mate with the rails. the upper rails were sitting too high. Now I have to contact them again about this paper weight.