400 FPS Golden Eagle F6604 M4A1 Carbine AEG Airsoft Rifle w/ Metal Gearbox Airsoft Gun RiflesSpecifications: Operation: Electric Automatic Firing Modes: Semi Automatic and Full Automatic Muzzle Velocity: 400 410 FPS (w 0. 20g BBs) Magazine Capacity: 300 Round High Capacity (Gear wind up) Gearbox: Full Metal Hop up: Yes, Adjustable Weight: 7 lbs Package Includes: 1x Rifle, 1x Rechargeable Battery, 1x Wall Charger, 1x Unjamming Rod, 1x 300 Round High Capacity Magazine Disclaimer: This airsoft gun contains the colored markings required by law,