Close-up of side engine vents, grids painted flat black, dry brushed in tan for surface detailing. Spare 1.35th armor parts glued to its side, such as shovel - armor jack - wrench - pliers - police light pole. According to Aliens movie specs, M-577 APC has maximum speed of 90mph, weight circa 15 tons. Armor protection is 2mm armor alloy, 4mm Boron Barbide plates, 3 mm woven Venlar line, foam packed floor cavity. Armor can deflect small arms fire, fragmentation, and low-velocity armor piercing ammunition. APC designed to be carried internally by UD4L Dropship. Aliens M-577 APC - www.brainkiller.it/aliens/aliens/vehi01.html

Armor Alloy is probably some form of depleted uranium composite (denser metal would make it kinetically more difficult for warheads to penetrate). Depleted uranium - en.wikipedia.org/wiki/Depleted_uranium

Since 1990s, various international health and peace groups have protested DU use in munitions and weapon systems, stating deployment or destruction of these systems in accidents or combat spread lethal radioactive powder throughout the battlefield, causing debilitating health and birth defects. Some assert mysterious Gulf War Syndrome illness of American veterans returning from 1991 Persian Gulf war resulted from such exposure. WHO Depleted Uranium - http://www.who.int/mediacentre/factsheets/fs257/en/

Boron Barbide plates sounds like some combination of Chobham and Reactive armor plates designed to absorb and dissipate incoming enemy rounds, or exploded to outwards when incoming enemy round detonates and explode inwards, thus dissipating its kinetic penetration effect. Chobham armour - en.wikipedia.org/wiki/Chobham_armour

• Reactive armour - en.wikipedia.org/wiki/Reactive_armour

Venlar is a form of Kevlar synthetic fiber, also worn on Colonial Marines body armor. DuPont Kevlar - www2.dupont.com/Kevlar/en_US/index.html

Inset : Aoshima : a Japanese diecast toy company, released 1/72-scale version of the UD4L Dropship and M-577 APC. Toy has retractable weapons bay for dropship. Future Warfare/Alternate Tanks and AFV's - www.mikes-tanks.com/Future.htm