The King Arms KAAG73 Oberland Arms M8 is truly a one of a kind electric airsoft rifle. This semi/full automatic gun is licensed by King Arms with full Oberland Arms trademarks on the receiver. The rifle has a satisfying weight that won't fatigue you during extend airsoft wars. The foregrip, trigger, receiver & sling mounts are full metal with ABS plastic grip & stock. The rifle features an adjustable stock that can accommodate users of any body type, a high-capacity 300 rd magazine and a shot velocity of 380-390 fps(using .20g BBs). The gun has a quad & monolithic top Weaver/Picatinny rail for attaching rifle scopes, red dot sights & flashlights for added versatility. Tweak the gun's adjustable hop-up unit to take out long range battlefield targets. For looks, firepower and unbeatable customizing options, this gun can't be beat!