Classic Army Airsoft Metal ARS4 High End AEG - BlackFeatures: Airsoft can shoot up to 400 FPS with 0. 20g BBs and 900 RPM using a 9. 6V battery! Spring system is capable to change quickly without going into the gearbox. Adjustable crane stock that can adapt into 5 positions. Adjustable front and rear sights for better aiming. AEG is capable to perform in close quarter combats and long range battles as well. 6. 03mm tightbore inner barrel and a robust steel frame that provides high end durability. Deans