"United States Marine Forces Special Operations Command (MARSOC) has two robot dogs fitted with gun systems based on Onyx's SENTRY remote weapon system (RWS) -- one in 7.62x39mm caliber, and another in 6.5mm Creedmoor caliber."
"The underlying robot dog doing this tunnel work for MARSOC is Ghost Robotics' Vision 60 quadrupedal unmanned ground vehicle, or Q-UGV, Eric Shell, head of business development at Onyx Industries, said."
"Ghost Robotics describes its Q-UGV as a 'mid-sized high-endurance, agile and durable all-weather ground drone for use in a broad range of unstructured urban and natural environments for defense, homeland and enterprise applications.'"
Rifle-armed robot Dogs now being tested by Marine special operators