Classic Army M15A4 Rifle Weight 3143.0g Barrel Length 510mm Barrel Caliber 6.08mm Bullet Capacity 300 Bullet 6mm BB Initial Bullet Speed 85-95 m/sec or 280.5 - 313.5 fps Battery Type Large Type (8.4V) Operation - Notes Harder Fixed Stock which can use 10.8 V battery Individual Series no. will be added New Steel Gears will be used Re-inforced Adaptor Ring for Hand Guard New Version of Hop-up Chamber & Rubber High Speed & High Torque Motor