More than 100,000 new state-of-the-art lightweight SA80 rifle magazines have arrived in Afghanistan to be used by troops fighting on the front line. The 30-round Magpul EMAG magazine is around half the weight of a standard metal magazine and helps reduce the weight that soldiers have to carry in their kit. Made from a polymer, the EMAG weighs 130g compared to its metal equivalent of 249g. Troops carry up to 12 magazines, so this change means each carries around one kilogramme less weight in total than before. Although it is lighter than others, the EMAG is robust; it's durability is...