Perfectly functional. Evike open box certified. Manufacturer: S&T (Licensed by Fabrique Nationale) FPS Range: 300-340 Specifications: Length: 1000mm Weight: 3000g Inner Barrel: ~405mm Magazine Capacity: 50rds. Works with King Arms and other compatible M4 / M16 Series Airsoft GBB Magazines Thread Direction: 14mm Negative Gas Type: Green Gas Fire Modes: Semi/Full-Auto, Safety Package Includes: Gun, Magazine, Manual Hopup: Yes, Adjustable