Umarex - Service Kit for TR 50 / HDR 50 82.02 PLN 69.71 PLN Service kit for Umarex HDR 50 revolvers. Always good to keep around for maintenance. BUY Reservdelar för HDR 50 Revolvers BUY MORE Share Article Number: 2629 Information Reviews Service kit for Umarex HDR 50 paintball pistols.