Umarex HK416D Electric 6mm. Electric Airsoft gun by UMAREX which resembles the real HK416D. It operates with a battery and 6mm plastic BBs. It is a high-quality polymer construction with metal parts (barrel, gear), has dual-type sights and a collapsible stock for more stable handling. On the side of the body, it has a safety with Safe – Semi Auto – Full Auto functions. To insert the battery, open a small door at the back of the stock and place it inside. (Attention!!! To insert the battery, the safety must be in the Safe position). In front of the trigger, there is a magazine that holds 370 plastic 6mm BBs. Around the barrel, there is a rail weaver for attaching accessories. The UMAREX HK416D Electric 6mm is an electric Airsoft gun ideal for both indoor and outdoor field play.