It is a self loading handgun that fires a bullet nominally 0.45 inches in diameter. Which there are numerous DIFFERENT .45 caliber pistols, the best known may be the 1911A1. Initially adopted by the US Military in 1911, it served as the main US military handgun until recent years.
'ACP' means Automatic Colt Pistol. A 1911, for example, would chamber a .45 ACP cartridge.
Automatic Colt Pistol
.45 ACP means Automatic Colt Pistol. It IS .45 Auto.
Caliber .45 Automatic Colt Pistol.
Glock Automatic Pistol
Automatic Colt Pistol. Colt invented the .45 Auto and thus had the right to name it.
Answer The Colt .45 caliber automatic pistol was accepted as the standard side arm of the US Army and became identified as the Model 1911 Pistol. The bullet developed for use in this new design of automatic pistol was called the .45 ACP or the .45 Automatic Colt Pistol cartridge. It stands for "Automatic Colt Pistol" because it was adopted for the Colt 1911 only by the US army.You get many variants the most prolific being the .45 GAP for glock handguns.It's patented I believe.
$400 new
15-45 USD
No. The .45 Automatic Colt Pistol (ACP) cartridge is longer the the .45 Glock Automatic Pistol (GAP) cartridge. Since they headspace on the MOUTH of the cartridge case, they cannot be interchanged.
ACP stand for Automatic Colt Pistol
The .45 GAP is a shorter cartridge than the .45 ACP. Developed for the Glock Automatic Pistol (that's the GAP) it does not interchange with the .45 Colt Automatic Pistol (ACP). Made for a smaller firearm, shorter action, etc.