Used commonly by handguns and used widely around the world by firearm owners, even civilians. This is the most basic of basic cartridges. It is also used commonly in the U.S Army for handguns such as the M45 MEUSOC
9mm or 9x19 Parabellum
The opening and closing of the breech is operated manually by a bolt. Opening the breech ejects a cartridge while subsequently closing the breech chambers a new round.
Bolt-Action
Well known by the world and commonly used by the U.S Military, come on its easy.
M4A1
Widely known around the world, this type of firearm's average RPM ranges from 600-900 RPM with rare cases of over 1000. They are usually loaded in 5.56x45mm or 7.62x39mm.
Assault Rifle (AR)
CZ-75
A large caliber cartridge known to be used by the Desert Eagle due to it's overpowered high caliber damages in games, not to be confused with it's counterpart used in the M82 Barrett.
.50 AE / .50 Action Express
These firearms use a linked lever to eject and chamber cartridges.
Lever-Action
Another well known firearm, it is used in both semi-automatic and pump action, a sibling of another well known shotgun.
SPAS-15
Small, compact and mostly tactical, some of these firearms can even fit inside suitcases or underneath your cloaks. Firing mainly 9x19 Parabellum rounds, they are small, accurate, fast, lethal and reliable.
Sub-machine guns (SMG)
AAC Honey Badger
A smokeless powder cartridge used by a very famous revolver used in allot of action movies and allot of revolvers. They are powerful and were not only designed for revolvers but rifles as well.
.357 Magnum
A system in which semi-automatic and fully automatic firearms operate through the energy created by combustion in the chamber and bore acting directly on the bolt face through the cartridge.
Blowback Operation
A firearm mistaken for another famous firearm as they are twins from the same parent. A DMR unlike it's counterpart which is an AR, this bad boy fires 7.62x51mm rounds and is semi-automatic made from a German firearm company.
HK417
Used for long range purposes, these firearms usually fire large calibers and some can pierce through even the toughest of armors. They are usually large, and used by one member of a squad for reconnaissance, or assassinations.
Sniper Rifles
FN Minimi
One of the weakest and smallest cartridges in the entire world, also used by one of the smallest handgun known in the world.
2mm Kolibri / 2.7x9mm Kolibri
A type of firearm where the barrel(s) are hinged and can be "broken open" to expose the breech.
Break Action
A well known revolver that is unlike any other, it's barrel is on the bottom instead of the top to decrease recoil. It has different models ranging from snub nose to longer barrels and models which can carry different cartridges, all of them are .357 Magnum/.38 Special, 9x19mm Parabellum, .40 S&W or 9×21mm.
Chiappa Rhino
Meant to be a combination of a Sub-Machine Gun and an Assault Rifle, these things fire rounds with performance similar to those fired from rifles. They can mostly pierce through light armor as well.
Personal Defense Weapon (PDW)
Remington 870
This medium powered cartridge achieves a slower muzzle velocity than longer cartridges and is designed for long range target shooting, though found some success in hunting games.
6.5 Creedmoor / 6.5 CM / 6.5 CRDMR
A single-shot firearm action in which a solid metal breechblock slides vertically in grooves cut into the breech of the weapon and actuated by a lever.
Falling Block
A break-action single shot pistol/rifle that has a variety of different kinds of barrels each able to carry different kinds of cartridge. They were usually used for hunting or competing.
Thompson Contender G2
A firearm with selective fire and loaded in full power rifle cartridges, for example the 7.62x51mm or the 7.62x54mmR. Some snipers derive from these firearms and despite their high recoil, soldiers use them due to their very powerful rounds.
Battle Rifles
AEK-971