Talk:Zephyr/Prime/@comment-2A02:C7F:4C55:7600:D919:DB7A:7CF1:2269-20180405134843/@comment-66.253.177.47-20180418003318

you should be able to trade for the BP, but your Foundry won't let you build it until you reach MR6. I'd assume you met your 4 trades max for the day and therefore are unable to trade further.