I just played this game My barrel came with a matching bolt but no carrier so I purchased a complete BCG from a member here and traded out the bolt. I would have gladly paid the extra money to just have them include the whole BCG. I imagine more people are buying the kits for new builds than barrel replacements. But How hard would it really be to just have 2 options. ArmorAlly has good prices shipping was slow for me and I asked a question that never got a response. That said they had stuff I needed in stock at the right price I would still order from them again.