3OF56 122 mm Frag-HE Rocket Assisted Projectile

3OF56 is a Soviet-era 122 mm rocket-assisted high-explosive fragmentation projectile listed for the 2A31 gun on the 2S1 Gvozdika and other compatible 122 mm artillery pieces. Open-source reference data describes it as a spin-stabilised HE-frag round developed in the early 1980s and introduced into Soviet service around 1985.

3OF56 122 mm Frag-HE Rocket Assisted Projectile, 122 mm rocket-assisted high-explosive fragmentation projectile, Munitions

Image source: 122 mm OF-462.jpg

Profile

Origin: Soviet Union
Built by: Various SovietRussian producers
Built in: Soviet UnionRussian Federation
Type: 122 mm rocket-assisted high-explosive fragmentation projectile
Service note: Cold War artillery ammunition in continued service

122 mm artillery ammunition unguided

Specifications

Caliber: 122 mm
Type: High-explosive fragmentation projectile
Projectile mass: About 21.76 kg
Explosive fill: About 4.05 kg of A-IX-2
Muzzle velocity: About 690 m/s
Compatibility: Compatible with Soviet/Russian 122 mm artillery pieces including the 2A31 gun used by the 2S1 Gvozdika

Service And Conflict Use

Service History

In service: Used as a 122 mm artillery projectile with the 2A31 gun family and compatible Soviet/Russian 122 mm artillery pieces
Used by: 2S1 Gvozdika and other 122 mm artillery systems

Firing Weapons

Firing weapon

Weapon type

Firing evidence

122 mm tracked self-propelled howitzer

The Worldwide Equipment Guide lists 3OF56 as the 21.76 kg complete projectile for the 2A31 cannon on the 2S1 Gvozdika and places it among the 2S1's 122 mm Frag-HE rocket-assisted ammunition.

Sources: Worldwide Equipment Guide, 2S1 Gvozdika Ammunition - Mortar Investments

3OF56 122 mm Frag-HE Rocket Assisted Projectile Images

3OF56 122 mm Frag-HE Rocket Assisted Projectile, 122 mm rocket-assisted high-explosive fragmentation projectile, Munitions - view 1 — Source: 122 mm OF-462.jpg

3OF56 122 mm Frag-HE Rocket Assisted Projectile, 122 mm rocket-assisted high-explosive fragmentation projectile, Munitions - view 2 — Source: 122 H 38 shell.JPG

Related Weapon Systems

122 mm artillery round, 122 mm artillery ammunition, Munitions

Munitions122 mm artillery round122 mm artillery ammunitionThe 122 mm artillery round is a family-level label for Soviet-origin medium-caliber artillery ammunition used by howitzers and other 122 mm artillery systems. In open-source reporting on the AQ-400 Scythe, the round appears as a standard carried payload, usually described as a pair of 122 mm artillery rounds rather than a specific named shell model.

Cartridge 122 mm HE with full charge, 122 mm separate-loaded high-explosive cartridge, Munitions

MunitionsCartridge 122 mm HE with full charge122 mm separate-loaded high-explosive cartridgeCartridge 122 mm HE with full charge is STV Group's separate-loaded 122 mm high-explosive cartridge for the 2S1 Gvozdika and D-30 howitzers. The Czech-made Nb 122 HE round uses the HE-462 projectile, a Ž 9-1 full propelling charge, and is published with a 690 m/s muzzle velocity and about 15.3 km maximum range.

BR-471 122 mm armor-piercing projectile, 122 mm armor-piercing projectile, Munitions

MunitionsBR-471 122 mm armor-piercing projectile122 mm armor-piercing projectileBR-471 is a Soviet 122 mm armor-piercing projectile used with the A-19 and related D-25-family guns. Identification guides describe it as a spin-stabilised anti-armour round, and reference material ties it to the A-19, D-25, D-25S, and A-19S 122 mm weapon family while giving its standard 25 kg projectile mass and 390 mm overall length.

Cartridge 122 mm HE with reduced charge, 122 mm separate-loaded high-explosive artillery cartridge, Munitions

MunitionsCartridge 122 mm HE with reduced charge122 mm separate-loaded high-explosive artillery cartridgeCartridge 122 mm HE with reduced charge is a Czech-produced separate-loaded 122 mm high-explosive artillery cartridge from STV Group. STV says the Nb 122 HE round is intended for the 2S1 Gvozdika and D-30 howitzers, combines an HE-462 projectile equivalent to OF-462 with a reduced Ž 10 propelling charge, and reaches about 12.9 km.

OF-462, 122 mm high-explosive fragmentation shell, Munitions

MunitionsOF-462122 mm high-explosive fragmentation shellOF-462 is a Soviet 122 mm high-explosive fragmentation shell used in 122 mm howitzer ammunition families. Wikipedia's D-30 table lists OF-462 at 21.76 kg with 3.675 kg of TNT and 690 m/s from maximum propellant charge, while the A-19 ammunition table says the gun could fire 122 mm howitzer shells and lists OF-462 at 765 m/s with charge no. 1. STV Group later describes an HE-462 projectile equivalent to OF-462, showing the same round family in current export ammunition documentation.

122 mm Katyusha rocket, Unguided 122 mm artillery rocket, Munitions

Munitions122 mm Katyusha rocketUnguided 122 mm artillery rocketThe 122 mm Katyusha rocket is the common Grad-style unguided artillery rocket family associated with BM-21 and improvised launchers. In the Lake Chad basin, ISWAP has used captured Grad-compatible rockets for crude long-range attacks on towns and military facilities, while in Yemen open-source investigations document pro-Houthi use of 122 mm unguided rockets in Aden.

Sources

Worldwide Equipment GuidePublisher: TRADOC DCSINT Threat Support Directorate | Note: Supports the 2S1 Gvozdika's 2A31 gun ammunition list, including 122 mm Frag-HE Rocket Assisted ammunition and the 3OF-56 complete projectile weight of 21.76 kg. | Accessed: 2026-06-23 3OF56 Projectile - METISPublisher: Fenix Insight | Note: Supports the 3OF56 as a Soviet-era-developed, Russian Federation, 122 mm high-explosive-fragmentation projectile; the page also states it was developed in the early 1980s and introduced around 1985. | Accessed: 2026-06-23 2S1 Gvozdika Ammunition - Mortar InvestmentsPublisher: Mortar Investments | Note: Supports the 2S1 Gvozdika's 2A31 gun ammunition list, including 3OF56 and 3OF56-1 high-explosive fragmentation shells and their 690 m/s muzzle velocity. | Accessed: 2026-06-23 122 mm OF-462.jpgPublisher: Wikimedia Commons | Note: Supports image provenance for a 122 mm artillery shell photograph. | Accessed: 2026-06-23 122 H 38 shell.JPGPublisher: Wikimedia Commons | Note: Supports image provenance for a second 122 mm artillery shell image. | Accessed: 2026-06-23