The G&G GR15 Raider AEG is a realistic M4 styled rifle built for airsoft skirmish domination. This gun has a Weaver/Picatinny quad rail hadnguard and removable rear sight that allow you to customize it into the ultimate airsoft assault rifle. The GR15 features an adjustable crane stock, a high-capacity 450 rd magazine, and a shot velocity of 360 fps (using .20g BBs). The gun fires at a solid 700-800 rpm and has an adjustable hop-up unit for increased long range accuracy in the battlefield. This AEG also features blowback, which adds some recoil to each shot for added realism. This rifle is an excellent choice for novice and experienced airsoft enthusiasts alike!