F Brownells Hk417® Complete Bolt Assembly 7.62mm Nato - Hk417® Complete Bolt Assembly $269.99 N/A - additional Brownells F Brownells Hk417® Style Barrel 7.62mm Nato 16in Isonite - Hk417® 16" 7.62mm Nato Barrel Isonite Finish $429.99 N/A - additional Brownells