The XM1219 Armed Robotic Vehicle was an unmanned ground combat vehicle based on the MULE

Multifunctional Utility/Logistics and Equipment

The Multi-Mission Unmanned Ground Vehicle, previously known as the Multifunction Utility/Logistics and Equipment vehicle , was an autonomous unmanned ground combat vehicle developed by Lockheed Martin Missiles and Fire Control for the United States Army's Future Combat Systems and BCT Modernization...

 Platform. The ARV-A-L MULE Vehicle (XM1219) would feature integrated anti-tank and anti-personnel and reconnaissance, surveillance, and target acquisition (RSTA) systems remotely operated by network linked soldiers. The Armed robotic vehicle was canceled in July 2011 over mobility concerns.

Design

• The MULE platform is controlled by a modified Xbox 360 controller for ease of training recruits used to using console controllers.

Mobility

• Transportable inside a C-130 Hercules
  C-130 Hercules
  The Lockheed C-130 Hercules is a four-engine turboprop military transport aircraft designed and built originally by Lockheed, now Lockheed Martin. Capable of using unprepared runways for takeoffs and landings, the C-130 was originally designed as a troop, medical evacuation, and cargo transport...
  
   and CH-47 Chinook
  CH-47 Chinook
  The Boeing CH-47 Chinook is an American twin-engine, tandem rotor heavy-lift helicopter. Its top speed of 170 knots is faster than contemporary utility and attack helicopters of the 1960s...
  
  .
• Transportable, slung under a UH-60 Black Hawk.
• Climb more than a 1 metre step.
• Cross a 1 metre gap.
• Traverse side slopes of 40 percent.
• Ford water obstacles over 0.5 metre.
• Cross obstacles as high as 0.5 metre.

Reconnaissance, Surveillance and Target Acquisition

The Reconnaissance, Surveillance and Target Acquisition or (RSTA) was likely canceled at some point.