: Australia is upgrading  350  of its M113A1 APCs to M113AS4 standards, which they hope will then see another 30 years of service. Two demonstration models have been produced. The $500 million M113AS4 upgrade by Tenix will add two feet in length to 171 of the vehicles, along with new armor, machinegun turrets and armored external fuel tanks. Due to enter service in 2006, Cosgrove believes the upgraded APCs will be ready on time and on budget. - Adam Geibel

Tenix product description online at: http://www.tenix.com/Main.asp?ID=437

Australian Army M113 background information, online at:
http://www.thunderandsteel.co.uk/m113.html