 The 11 IRA members would be driven to the checkpoint in the back of a makeshift Bedford armoured dumper truck.They were armed with 7.62mm AK-47s and 5.56mm Armalite AR-18s, two 12.7mm DShK heavy machine-guns, RPG-7s, different kinds of grenades, and a LPO-50 flamethrower.The heavy machine guns and the flamethrower were mounted on a tripod on the lorry bed.