9×21mm Gyurza

The 9x21mm Gyurza (Гюрза, Russian for "blunt-nosed viper") round is a Russian handgun round designed to defeat body armor that was developed by TsNIITochMash for its SR-1 Vector semi-automatic pistol and SR-2 Veresk submachine gun.

Variants
SP-10 (7N29) - armor piercing bullet with hardened steel core

SP-11 (7N28) - standard FMJ bullet with lead core

SP-12 - low ricocheting, expanding bullet

SP-13 (7BTZ) - tracer AP bullet based on 7N29

Designations

 * 9x21mm Gyurza
 * 9mm Gyurza