Full metal upper/lower receiver 8mm reinforced metal gearbox Integrated rail system w/ panels 10.5-inch metal optics rail Extended trigger guard Retractable side-folding stock High capacity waffle magazine Rubberized cheek rest & buttplate Adjustable front and rear sights Shoots up to 400 FPS (w/ 0.20g BBs)Specifications: Operation Electric AutomaticBuild Metal Upper & Lower Receiver, Barrel, Rail System / Polymer Handguard, Stock, GripFiring Modes Semi-automatic and Full-automatic, w/ Functional SafetyMuzzle Velocity 385 'oe 405 FPS (w/ 0.20g BBs)Gearbox 8mm Full Metal Specialty Version 2Magazine 330rd High Capacity (gear wind-up)Battery 11.1V Nunchuck LiPo (not included)Inner Barrel Length 357 mmInner Barrel Diameter 6.08 mmHop-Up AdjustableWeight 9.3 poundsOverall Length 33.5 in. / 36 in. (Retracted / Extended) Rifle