The FN P90® selective fire carbine was developed for NATO in the late 1980s as the Personal Defense Weapon (PDW) component of the integrated 5.7x28mm Weapons System.
The optimum word is carbine
5.7 is a pistol round optimized against soft body armor on the premise that the carbine built for it is full auto.
The FN P90® selective fire carbine was developed for NATO in the late 1980s as the Personal Defense Weapon (PDW) component of the integrated 5.7x28mm Weapons System.
The optimum word is carbine