All About Ammo
Knowing how ammunition works is essential to getting the most out of your firearm. Learn about the core components of ammunition, basic terms, and standard measurements.
Popular Semi-Automatic Pistol Ammunition Calibers
- .380 ACP:
- This small round is known as the “three-eighty” and is a popular choice for small pistols.
- This caliber is the most popular and widely used worldwide.
- .40 S&W:
- Larger and slower than 9mm, with more recoil.
- .45 Auto:
- Slightly larger and slower than .40 caliber, with a bit more recoil.
- .45 GAP:
- GAP stands for “GLOCK Automatic Pistol”. This caliber rivals the firepower of the .45 Auto, but is shorter, allowing it to fit into a more compact semi-automatic pistol.
- Has greater range and is faster than the .45 Auto.
- .357 Auto:
- Slightly longer than the .40 caliber, and known for accuracy and stopping power.
More from GLOCK
Find a RangeThe best way to learn about pistols is to get on the range! Use our Locator to find a range near you.
TrainingLearn more tips about training with your GLOCK pistols.
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