BAE's Advanced Concept Rig (what size weapon is mounted?)

The word is out – we have a new advanced concept rig on our stand at @AUSAorg. Stop by our booth and meet the RB301 – a rolling test lab for innovation. #AUSA2021 #RB301 #innovation pic.twitter.com/hahHuXOhrv

— BAE Systems, Inc. (@BAESystemsInc) October 11, 2021