Each box includes a battery box and a GBS. OA93 folding stock can fold to left or right. Main system is like M4A1,handguard use RAS and could mount with several accessory. Model : M4 R.A.S. Initial Velocity : 90-100 m/s Firing Rate : 920 BB/M Length : 650mm Extend : 870mm Barrel Length : 375 mm motor : ICS Turbo 3000 battery : ICS (MC-80 9.6V 1700mah) weight : 3300g Pellet Capacity : 450 BBs Hop-Up : yes Battery & Charger sold separately - Click Here