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7.5 FK


The 7.5 FK or the 7.5 FK BRNO is a bottlenecked rimless centerfire automatic pistol cartridge developed by the Czech firearms and ammunition manufacturer FK Brno. The cartridge was designed to provide long-range accuracy and high incapacitation capability, similar to that of a .357 Magnum, in a relatively small pistol, especially when compared to other automatic pistol cartridges. Seeing the benefits of the cartridge, it has been adopted by numerous law enforcement agencies and militaries engaged in ongoing conflicts by their special operations units.
It has begun replacing the FN P90 as the standard issue firearm for foundationsite security in several locations throughout the world. 


Note: 343.2 m/s is the subsonic barrier - anything below that is considered subsonic. Subsonic ammunition removes the bullet crack down range making the round better suited to stealth.

Ammunition Type Damage Bullet Velocity (m/s) Barrier Penetration
F9 Flat Nose 12.7 610 3.5
S95 Hollowpoint 18.9 502 0.2
F5 Discarding Hollowpoint 15.3 582 1.7
F8 Armor Piercing 10.7 803 9.5

Note: Barrier penetration represents the rounds ability to go through walls and barriers. Armor piercing represents the rounds ability to penetrate body armor plates.