Purchased MP5 Umarex from this company, the gun stopped working within a week. Made several Phone calls leaving a message with no response, Finally received correspondence through email. Company will not warranty battery sold with gun. So your out of luck if they send you defective battery. The gun also doesn't work, my options are to pay for shipping back which I have already paid for. If the gun is not repairable I get a refund minus handling fee. Gun is also not manufactured any more so I can only receive pennies on the dollar from factory. Do yourself a favor and stay way from these guys.