Specifications:
Operation: Electric Automatic
Firing Modes: Semi-automatic and Full-automatic, with working safety
Muzzle Velocity: 305-350 FPS (with 0.20g BB's)
Magazine: 70-round mid-capacity (speed loader NOT included)
Gearbox: Full metal
Hop-up: Adjustable
Weight: 4.68 pounds
Ammo type: Seamless 0.20g or heavier (0.23g, 0.25g, 0.26g, 0.28g, etc) BBs. 

For maximum performance and accuracy, Airsoft Megastore recommends GoldenBall ProSlick BBs which carry perfect spherical consistency and density, available at Airsoft Megastore for the lowest price on the market, guaranteed