9×21mm Gyurza
The 9×21mm 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 Vektor semi-automatic pistol and SR-2 Veresk submachine gun.
Also recorded as 9mm Gyurza
9×21mm Gyurza

Costas-1963 · CC BY-SA 4.0
- Name
- 9×21mm
- Field
- personal defense weapon cartridge · pistol cartridge
- Region
- Russia
VALÉORINE Encyclopedia
VALÉORINE documentary reading
Documentary summary
The 9×21mm 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 Vektor semi-automatic pistol and SR-2 Veresk submachine gun.
Admitted source layer · organised and presented by VALÉORINE
Note VALÉORINE
No house-authored Note is published until its assertions and sources pass the VALÉORINE evidence contract. The documentary article remains available in full while that enrichment is being consolidated.
Documentary enrichment in progress · no unsupported statement published
Reference Check
Propose documentary evidence for 9×21mm Gyurza. A contribution is never written directly as fact: identity, source, rights and evidence gates still decide.
Sign in to contribute
World of VALÉORINE
Documentary connections
Only confirmed graph relationships appear here. Images are shown only when their identity and reuse rights both pass the documentary gate.
Documentary evidence
Evidence Panel
not yet certified
- Identity
- resolved
- Independent source families
- 0
- Admitted assertions
- 0
- Open conflicts
- 0
Authority files
wikidata · Q4646729 · wikipedia · 9×21mm Gyurza
In this article
Key facts
Key facts
• Name — 9×21mm • Origin — Russia • Type — Pistol • Used By — FSB Russian Army • Designer — TsNIITochMash • Production Date — 1990s–present • Variants — SP-10 (7N29), SP-11 (7N28), SP-12, SP-13 (7BTZ) • Is Si Specs — yes • Parent — 9×21mm • Case Type — Straight, rimless • Bullet — 9.05 • Shoulder — 9.6 • Base — 9.9 • Rim Dia — 9.9 • Rim Thick — 1.2 • Case Length — 20.9 • Length — 32.7 • Is Si Ballistics — yes • Bwunit — gram • Bw1 — 6.7 • Btype1 — 7N29 • Vel1 — 410 • En1 — 563 • Bw2 — 7.9 • Btype2 — 7N28 • Vel2 — 390 • En2 — 601 • Bw3 — 7.2 • Btype3 — 7BTZ • Vel3 — 395 • En3 — 562 • Balsrc — Modern Firearms
Performance
Performance
The method of construction of the rounds allows them to be effective against both unarmored and armored targets. The bullet has a hard sub-caliber core contained within an outer sleeve and separated from it by a polyethylene layer. If the bullet strikes an unarmored target, it holds together to produce a wide wound channel. If the bullet strikes an armored target, the sleeve is stripped away, and the core penetrates alone. The 7N29 AP loading fires a 6.7 g bullet at 410 m/s with 560 J of muzzle energy and will reportedly penetrate two 1.2 mm titanium plates, plus 30 layers of Kevlar, at 50 m. The disadvantage of the rounds is that high impact velocities are needed for them to work effectively, so the bullets are relatively light to maximize their muzzle velocity. This means they will lose velocity relatively quickly, limiting their effective range.
Variants
Variants
SP-10-UCH – unloaded training cartridge SP-10 (7N29, sometimes referred to as RG052 or RG054) – armor-piercing bullet with hardened steel core SP-11 (7N28) – standard FMJ bullet with lead core SP-12 – low ricocheting, expanding bullet SP-13 (7BT3) – tracer AP bullet based on 7N29 SP-17 – bullet with reduced environment penetration
Designations
Designations
• 9×21mm Gyurza • 9mm Gyurza
Platforms
Platforms
• SR-1 Vektor • SR-2 Udav • SR-2 Veresk • Gepard (submachine gun)
Places
Named by the record
Places
Only places the record itself states, plotted where the house gazetteer settles their coordinates. Nothing is inferred from a name or a nationality.
- Russia
Notes from the source article
Cited by Wikipedia
Notes from the source article
These works are cited by the source article, in its own numbering. They are recorded as its citations, not as sources VALÉORINE has verified.
- 1.Where Next For PDWs. 2019-09-05.
- 2.ПИСТОЛЕТНЫЙ ПАТРОН "УЧЕБНЫЙ" СП10-УЧ (РОССИЯ).
- 3.ПИСТОЛЕТНЫЙ ПАТРОН С БРОНЕБОЙНОЙ ПУЛЕЙ СП-10, РГО-52, 7Н29 (РОССИЯ).
- 4.Рефераты на военные темы. 2023-10-02.
- 5.Russian 9mm ammunition.
- 6.ЦАМТО / / ЦНИИточмаш поставил Минобороны РФ партию патронов повышенной пробивной способности.
- 7.ПИСТОЛЕТНЫЙ ПАТРОН С УСИЛЕННЫМ ЗАРЯДОМ СП10-УЗ (РОССИЯ).
- 8.ЦАМТО / / Концерн "Калашников" поставил Минобороны России партию патронов 9х21 мм.
- 9.ПИСТОЛЕТНЫЙ ПАТРОН С ПУЛЕЙ СО СВИНЦОВЫМ СЕРДЕЧНИКОМ "СП-11" (7Н28) (РОССИЯ).
- 10.9x21mm variants.
- 11.ПИСТОЛЕТНЫЙ ПАТРОН С ЭКСПАНСИВНОЙ ПУЛЕЙ "ПЭ" "СП-12" (РОССИЯ).
- 12.ПИСТОЛЕТНЫЙ ПАТРОН С БРОНЕБОЙНО-ТРАССИРУЮЩЕЙ ПУЛЕЙ "БТ" (СП-13, СП10Т, 7БТ3) (РОССИЯ).
- 13.ПИСТОЛЕТНЫЙ ПАТРОН С ПУЛЕЙ ПОНИЖЕННОЙ ПРОБИВАЕМОСТИ СП-17 (РОССИЯ).
References
Citations
References
Each reference names the institution holding it, so a reader may go to the document itself.
reference work
Partially resolvedreference work
Partially resolved
The Encyclopedia exists whether or not anything is for sale. Corrections are recorded rather than overwritten, and every version of this record is kept. Published 14 August 2026.
Elsewhere in Militaria
6,095 published records in this field, each with its sources named.
- 9×18mm MakarovTerminology
- 9×18mm UltraTerminology
- 9×19 mm ParabellumTerminology
- 9×21mmTerminology
- 9×23mm LargoTerminology
- 9×23mm SteyrTerminology
- 9×23mm WinchesterTerminology
- 9×25mm DillonTerminology
Best supported in this field
For owners
Own an object connected with 9×21mm Gyurza?
A specialist will read what you send and tell you what the house can establish, what it cannot, and whether the object is suited to sale. There is no charge and no obligation. The object stays with you throughout; nothing is shipped to us unless it is arranged in writing beforehand.