It means that it takes 9mm Parabellum ammunition also known as 9mm Luger and 9x19.
automatic colt pistol
Automatic Colt Pistol
Automatic Colt Pistol
Glock Automatic Pistol
Automatic Colt Pistol
It means it is not a pistol. That is the marking on a blank gun, indicating the model. It can only fire blanks.
ACP stand for Automatic Colt Pistol
Impossible to answer as asked. Rifle, pistol, shotgun? What does accurate mean to you?
If you mean a 22LR, 200or so
Glock Automatic Pistol. It's used in reference to the .45 GAP cartridge developed by Glock.
If by 45 automatic pistol you mean the 1911 Colt, then John Browning developed this design and the cartridge it uses between 1900 and 1904, producing his first prototype for testing in 1904. It was tested and modified, then adopted for service use by the United States in 1911, hence its designation as the M1911 Automatic Pistol. The design was further modified to create the M1911A1, which includes the grip safety.
I take a guess at this: If you're referring to 45 GAP, the term GAP stands for "Glock Automatic Pistol."