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A single piece of ammunition, made up of the bullet, casing, powder, and primer. The metal projectile (usually lead) that is expelled from the mouth of a firing cartridge

A tube that holds all the other ammunition components together, typically made from brass. The bullet is usually held in the open end of the casing.

How Does Firing Ammunition Work?

When you pull the trigger of a firearm, the firing pin hits the primer and ignites the powder. As the powder burns, it creates pressure that pushes the bullet down the barrel.

How is Ammunition Measured?

Ammunition is measured by the bullet’s diameter, which is known as “caliber”. The caliber can be measured in both inches and millimeters (mm).

Depending on where it was invented, ammunition is measured in millimeters or inches. 9mm ammunition originates in Europe, whereas the .40 caliber was invented in the United States.

Ammunition for a pistol corresponds to the pistol caliber, so you will use 9mm ammunition for a 9mm pistol.

With state-of-the-art indoor training faciliti service lorim custom

A small cap in the head of the cartridge that, when struck by the firing pin, ignites the


With ste-of-the-art indoor training facilities and full sece custom shop on lion, we can accomm most reests. All modern weapon enthussts can te our broad services and real-world, experienc. state-of-the-art ilities and full service.



  • Ordered a custom glock triggers for glock 21, couldn’t be happier. works like a friggen charm!

    Ordered a custom glock triggers for

    Lim, South Africa
  • The reason I give 4/5 stars is because I didn't like the fact it took so long to ship my package which was containing no more than 7-8 items. The parcel came 1 day after the appointed date. I bought G19 Gen5 MOS Compact | 9x19mm. The original magazine o

    I Bought G19 Gen5 MOS Compact | 9x19mm

    Campbell, Germany
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Pistol AmmunitionPopular Semi-Automatic Pistol Ammunition

Popular Semi-Automatic Pistol Ammunition Calibers

.22 Long Rifle (LR):
Rimfire cartridge often used in sport shooting and training. This caliber is ideal for first-time shooters.
.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.


Rockwall Professional Firefighters below for additional informaAssociation

  • Specialized equipment to align
  • Entire collection of rifle scopes
  • Customize any firearm
  • Provide several essential
  • Range of services at Audley
  • Get your firearms field-ready


Rockwall Professional Firefighters below for additional informaAssociation

  • Treated as if it is loaded at all times
  • Gun from a holster, keep it pointed
  • Finger off the trigger and outside
  • Report it to a range instructor directly
  • Range of services at Audley
  • Weapons must be discharged and Safely

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