jg airsoft m4 s-system full metal gearbox desert tan aeg rifle w/ integrated ris and high performance tight bore barrel - newest enhanced model(Airsoft Gun) Length: 760mm - 840mm Fire Mode: Semi/Auto, Safe Weight: 3500 grams Battery: Small Type (8.4v Small type and Charger included) Velocity: 380 - (measured with 0.20g BBs)