Guns in the Heather is a 1969 Walt Disney adventure film directed by Robert Butler and produced by Ron Miller.
Rich Evans (Kurt Russell), An American exchange student’s day at the Leinster School in Ireland is interrupted when a bleeding man drives up to the school and gives Rich a message for his brother Tom (Glenn Corbett), before dying.
Rich and his friend Sean O’Connor (Patrick Dawson) are taken from the school by a man who claims to be from the American Embassy, but who turns out to be an Eastern Bloc agent.
They head to Boyne castle, where the message said vital info about an East Bloc defecting scientist was hidden.
Using a dory and a glider they are able to intercept the East Bloc agents before they can grab the defecting scientist.