I recently got this 65L Austrian Army issue rucksack as a present. There is an "item" on it i have no clue to what is for There's no labels on it except one writing "Heereseigentum 2005 REDO". It of course means Army Property. If you guys can help me out on any info on it, model, and what branch used this etc, i will be very happy. Especially about the aluminum thing at the bottom, as seen in the pics. Very good quality pack btw.