By Todd South The Third Arm can support such weapons as the M249 light machine gun, which weighs ... hold 20-pound shields with a mount that connects from the mechanical arm to the shield.

Despite these restrictions, engineers still found a way to arm the Osprey. The MV-22 has two weapons systems: a belly-mounted gatling gun and a tail-mounted machine gun. The first weapon is the so ...

Additionally, the arm is lightweight, easily mounted and repaired, easy to use and significantly less expensive than the Buffalo, Jackson said. Stephen H. Bennett , a mechanical engineer with NV ...