The guns of the category AEP (Automatic Electric Pistol) have no moving slide. However, the next BB is automatically reloaded after each shot. The advantages of AEP are the low maintenance costs and also that they are more silent. The performance lies with 150 to 250 FPS below that of gas guns. Unless noted to the contrary in the product details all weapons are generally semi-automatic.
AEP guns are a bit easier to maintain than gas pistols with blow back because less wear and tear occurs. Depending on the manufacturer, the weapons are made from plastic or metal. They sometimes come alreay equipped with battery and charger, this also depending on the manufacturer. BBs must be purchased separately in any case (BB weight 0.20g). The specific product details give more information about the package contents and materials used.