Nothing in the first clause of this section extends to arms (other than cannon) or ammunition imported or exported in reasonable quantities for his own private use by any person lawfully entitled to possess such arms or ammunition; but the Collector of Customs or any other officer empowered by the Government in this behalf by name or in virtue of his office may at any time detain such arms or ammunition until he receives the orders of the Government thereon. Explanation - Arms, ammunition and military stores taken from one part of Bangladesh to another by sea or across intervening territory not being part of Bangladesh are taken out of and brought into Bangladesh within the meaning of this section.