Built to withstand harsh treatment, all parts are molded in plastic and are sturdy. The simple operation is powered by 4 AA batteries(not included) BBs are gravity-fed through a top feeding tray. Safety is the main concern with all AirSoft guns and no other gun emphasizes the issue as a Mini-Electric. Our AirSoft BB Gun collection contains mini-electric guns, spring air pistols, spring air rifles, gas guns and accessories. Powerful and realistic looking, you will love the way they feel in your hand. Use 6mm BBs or Paintballs. SPECIFICATIONS: Fully Automatic Shoots 6mm AirSoft pellets 75 Rounds approximately 115 fps Require 4 "AA" batteries (not included)