Caliber .45 Automatic Colt Pistol.
In metric measurements, the .45 ACP is referred to as 11.43x23mm.
.45 caliber ACP
45 ACP
.45 ACP
Probably. It would likely refer to a handgun that fires a .45 caliber ACP, or .45 GAP or an older .45 caliber revolver round.
If you mean the Glock 36, it's 45 ACP.
Technically, it would be .47 caliber, but I don't know of anything that is chambered in that caliber. .45 ACP is 11.43.
.22, 9mm, 45 ACP are among them.
Automatic Colt Handgun. It refers to a gun, or also to a caliber. 45 ACP is called ACP because it was originally designed by Colt.
The caliber of this weapon is .45 ACP, or it's full name is .45 Automatic Colt Pistol.
Automatic Colt Pistol. Colt invented the .45 Auto and thus had the right to name it.