| United Kingdom|
| Civil Defence Supply - UK|
9×19mm Parabellum (originally 10mm Auto)
.224 Boz Wikipedia
The .224 BOZ cartridge was developed in the late 1990s with the purpose of defeating body armour. The .224 BOZ began as a 10mm Auto case necked down to .223. Original trials were successful, with this round firing a 50 gr projectile chronographed at over 2,500 ft/s (760 m/s).