FPS Range: 350-370 Specifications: Length: 680mm / 760mm, Adjustable Weight: 1814g (4lbs) Inner Barrel: ~363mm Magazine Capacity: 350rd Hi-Capacity. Works with Matrix, G&G, Tokyo Marui and other compatible M4 / M16 Series Airsoft AEG Magazines Thread Direction: 14mm Negative Gearbox: Ver 2 Full Metal, Fully Upgradeable Motor: Long Type Fire Modes: Semi/Full-Auto, Safety Battery: 9.6v Small Butterfly Type recommended Hopup: Yes, Adjustable Package Includes: Gun, Magazine, Manual