concealed pistol jacket

James Bond, why use a low-caliber handgun, the Walther PPK 32?
James Bond would not have been spoiled for choice! It was the flower and cream of British secret service, equipped with every tool needed to kill the Russians in the Cold War and some bad. So why use .32-caliber pistol? A 7.65 round that has poor braking power. Q Sure could have developed a concealed .45, small enough to hide inside Bond tuxedo?
Because he was British and 45 American era
This Is My Rifle – Full Metal Jacket