Product DescriptionThis M4 Electric Airsoft Rifle comes with all the best features and accessories including a M203 Grenade Launcher (Shotgun). This new BIM4 from Airsoft rifle from BOYI includes a high torque motor and mechbox. These new upgrades allow this gun to shoot a 300 FPS. This gun is the ultimate Airsoft gun because it gives you the best of both worlds, a fully automatic electric rifle and a spring shotgun. Included with this gun are 2 adjustable stocks, 2 magazines (1 Hi-Cap, 1 standard), 2 hand guards (1 RIS Handrail, 1 Standard), a rechargeable battery and charger, a tactical 3 point sling and a M203 Grenade Launcher.Full 1/1 Scale300 FPSFull Auto / Semi Auto Electric RifleM203 Grenade LauncherTactical 3 Point SlingHop Up2 Adjustable Stocks (1 Standard and 1 with Cheek Rest and BB Storage)2 Hand Guards (1 Standard, and 1 RIS)2 Magazines (Hi-Capacity and StandardRechargeable Battery and ChargerReplaceable Piston