The M4/M4A1 5.56mm Carbine is a lightweight, gas operated, air cooled, magazine fed, selective rate, shoulder fired weapon with a collapsible stock. It is now the standard issue firearm for most ...

The drone has fireworks strapped to its landing gear, while the robot dog has a fireworks launcher mounted on its back ... the military recently tested adding an M4A1 carbine to a Ghost Robotics ...