45 ACP. Recently, my department decided to retire our Gen3 Glocks after 15 years of service, making way for the Gen5 models.

45 caliber pistol: Army Gen. Austin Miller has not abandoned his M1911A1 for a newer, younger Glock 19. Miller, who leads all U.S. troops in Afghanistan, has used the .45 as his general officer ...

“The comprehensive testing and evaluation process conducted by CBP demonstrated the Glock pistols lasting reliability that instills confidence in those who use it to go into harm’s way.