Magazine for M249 machine gun by A&K. The magazine is made of dense polymer, so it is relatively light and durable. It has a capacity of 1500 BBs and has two feeding modes: continuous feeding and sound-activated (in this mode the magazine detects firing and automatically feeds BBs). Inside the magazine is a Ni-MH 4.8V 700mAh rechargeable battery. The magazine is compatible with A&K, SpecnaArms and ClassicArmy replicas.