I too would love to see a 300 BLK RDB, but it seems that Kel-Tec has turned their back on the 300 BLK. At one time there was talk of an SU-16 in 300 BLK, but recently it seems that whenever someone asks a Kel-Tec representative about 300 BLK at a trade show, there are downward glances, sideways glances, awkward pauses, mumbling, the nervous shuffling of feet....