9×21mm Gyurza

9x21mm
Type	Pistol
Place of origin	Russia
Service history
Used by	FSB Russian Army
Production history
Designer	TsNIITochMash
Produced	1990s to the present
Variants	SP-10 (7N29) SP-11 (7N28) SP-12 SP-13 (7BTZ)
Specifications
Case type	Straight walled, rimless
Bullet diameter	9 mm (0.35 in)
Case length	21 mm (0.83 in)
Overall length	33 mm (1.3 in)
Ballistic performance
Bullet mass/type Velocity Energy 6.7 g (103 gr) 7N28 410 m/s (1,300 ft/s) 563 J (415 ft⋅lbf) 7.9 g (122 gr) 7N29 390 m/s (1,300 ft/s) 601 J (443 ft⋅lbf) 7.2 g (111 gr) 7BTZ 395 m/s (1,300 ft/s) 562 J (415 ft⋅lbf)
Source(s): Modern Firearms

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

External links

• 9x21mm Ammunition (Russian)
• SR-1 Vector - Modern Firearms
• SP Ammunition - Modern Firearms