Very simliar to Mini Electric Airsoft guns, however full size version. Hold the trigger down and they keep firing! It shoots 6mm soft air pellets. Battery requied Each gun comes packed with 100 pellets in a beautiful color box. Don"t forget to order extra ammo. These shoot farther and faster than most full auto airsoft guns. You will not be disappointed with the quality or the durability. This gun is made of ABS plastic. You can fire this gun as a semi auto if you push the trigger for one second. This is a fully automatic machine gun.