Offering twice as much firepower and high-tech gadgetry as your standard tank, the AutoCopter and EFV are battle vehicles you don’t want to mess with. Continue reading to see more. Click here for first picture in gallery.

AutoCopter

The AutoCopter is a fully-autonomous gunship that utilizes GPS tracking to prevent “accidents”. This unmanned aircraft comes equipped with dual AA-12 recoilless shotguns, capable of firing 1900 .18-caliber BBs in 4-seconds or less.

EFV

Developed by General Dynamics, the EFV (Expeditionary Fighting Vehicle) is the US Marine Corps’ latest amphibious vehicle — prototypes currently undergoing tests. It boasts an aluminum hull that comes equipped with an acutated bow flap to help planing when at sea. Features include: a Bushmaster II 30mm cannon, 7.62mm machine gun, and smoke/gas dispensers.