This is a great option for entry to intermediate level players. The Armalite M15A4 Carbine by ASG features a full metal gearbox and metal outer barrel for long lasting durability. This Sportline package includes everything you need to get started, including the gun, rechargable 1400 mAh battery, and battery charger. The magazine has a 300 round capacity and the gun is compatible with most M4 style magazines (JG, CYMA, TM, Elite Force, Dboys). This AEG has a 6 position LE style stock which can easily be adjusted to the shooter's preference. The detachable carry handle has a built in iron sight with adjustable windage and elevation. The carry handle can also be removed to reveal a weaver rail for mounting optics. The gun has built in front and rear sling mounts. Not only does this gun look and feel like the real thing, it also has official ArmaLite, Inc. trademarks for the ultimate authentic look.