3F5 Smelchak

The 3F5 Smelchak is a Soviet 240 mm semi-active laser-guided mortar round developed for precision attacks with 240 mm mortars such as the 2S4 Tyulpan and M240. Reference sources describe it as a heavy high-explosive fragmentation projectile with a laser designator-based terminal guidance system and a relatively short precision mortar range compared with unguided 240 mm ammunition.

3F5 Smelchak, Laser-guided 240 mm mortar round, Munitions

Image source: File:2S4 Tyulpan ARMY-2022.jpg

Profile

Origin: Soviet Union
Built by: Soviet defense industry
Type: Laser-guided 240 mm mortar round
Service note: Developed in the 1980s
Designed: 1980s
Produced: 1980s

precision fires laser-guided mortar

Specifications

Caliber: 240 mm
Mass: 134.2 kg
Length: 1,635 mm
Warhead: 32 kg high-explosive fragmentation charge
Guidance: Semi-active laser homing with terminal correction thrusters
Range: 3.6 to 9.2 km reported for the guided round

Service And Conflict Use

Service History

In service: Used with the 1K113 Smelchak guided artillery system for 240 mm mortars
Used by: Russian Ground Forces
Wars: Russia-Ukraine War, Soviet-Afghan War, Second Chechen War

Firing Weapons

The 3F5 Smelchak is a 240 mm laser-guided mortar round documented for use with 240 mm mortars, including the 2S4 Tyulpan.

Firing weapon

Weapon type

Firing evidence

240 mm self-propelled heavy mortar

TWZ reports Russian forces used 2S4 Tyulpan mortars to fire Smelchak rounds in Ukraine, and Militarnyi describes the 3F5 as a Soviet 240 mm round developed for self-propelled and towed 240 mm mortars.

Sources: TWZ Smelchak, Militarnyi Smelchak sighting

3F5 Smelchak Images

3F5 Smelchak, Laser-guided 240 mm mortar round, Munitions - view 1 — Source: File:2S4 Tyulpan ARMY-2022.jpg

Related Weapon Systems

KM-8 Gran, 120 mm guided mortar round, Munitions

MunitionsKM-8 Gran120 mm guided mortar roundThe KM-8 Gran is a Russian 120 mm semi-active laser-guided mortar round from KBP Instrument Design Bureau. Rosoboronexport's catalog describes it as a 27 kg HE-fragmentation projectile with an 11.2 kg warhead, a 5.3 kg propellant charge, and a 1.5-9 km range for smooth-bore and rifled 120 mm mortars.

GBU-16 Paveway II, 1,000-pound laser-guided bomb, Munitions

MunitionsGBU-16 Paveway II1,000-pound laser-guided bombThe GBU-16 Paveway II is a U.S.-origin laser-guided bomb that combines a 1,000-pound Mk 83-class bomb body with a Paveway II guidance kit. In the Yemen Civil War, human-rights and munitions investigators identified likely GBU-16 remnants from Saudi/UAE-led coalition airstrikes, making it part of the conflict's documented air-delivered precision-munition record.

GBU-24 Paveway III, 2,000-pound-class laser-guided bomb, Munitions

MunitionsGBU-24 Paveway III2,000-pound-class laser-guided bombThe GBU-24 Paveway III is a U.S.-origin 2,000-pound-class laser-guided bomb kit family built around a Paveway III seeker and tail assembly for Mk 84 or BLU-109-class bomb bodies. In the Yemen Civil War, rights monitors and munitions specialists documented GBU-24 or Paveway III-series remnants after Saudi/UAE-led coalition airstrikes, making it part of the coalition precision-strike record while leaving some variant details dependent on fragmentary battlefield evidence.

Kitolov-2M, 122 mm semi-active laser-guided artillery projectile, Munitions

MunitionsKitolov-2M122 mm semi-active laser-guided artillery projectileKitolov-2M is a Russian 122 mm semi-active laser-guided artillery projectile in the Kitolov family, marketed by Kalashnikov Group and linked in open reporting to KBP's precision-guided artillery line. Sources describe it as a high-explosive fragmentation round for 122 mm towed and self-propelled artillery, including D-30 and 2S1 Gvozdika-class guns, with a reported range of about 13.5 km.

Paveway IV guided bomb, Dual-mode precision-guided bomb, Munitions

MunitionsPaveway IV guided bombDual-mode precision-guided bombPaveway IV is a UK-built 500-pound-class precision-guided bomb developed by Raytheon UK for RAF and allied strike aircraft. It combines GPS-aided inertial navigation with laser guidance and an electronic fuze, making it a flexible air-launched munition documented in RAF counter-ISIS strikes, UK-led participation in Red Sea Crisis attacks on Houthi military sites, and Saudi-led coalition air operations in Yemen.

PM120 precision guided mortar bomb, 120 mm GPS-guided mortar bomb for smoothbore mortar systems, Munitions

MunitionsPM120 precision guided mortar bomb120 mm GPS-guided mortar bomb for smoothbore mortar systemsPM120 is ST Engineering Land Systems' Singapore-made 120 mm GPS-guided mortar bomb for smoothbore mortar systems. Janes reported it as part of the SRAMS Mk II ammunition suite, with a 2.8 kg TNT warhead, up to 8.5 km range, and roughly 10 m CEP.

Sources

Militarnyi Smelchak sightingPublisher: Militarnyi | Note: Supports that 1K113 Smelchak / 3F5 high-precision mortar rounds were observed in Russia-Ukraine War reporting and identifies them as laser-guided 240 mm mortar rounds for 240 mm mortars. | Accessed: 2026-06-23 1K113 SmelchakPublisher: GlobalSecurity.org | Note: Supports caliber, mass, length, warhead weight, range, and the guided-mortar-system context for the 3F5 Smelchak round. | Accessed: 2026-06-23 TWZ SmelchakPublisher: The War Zone | Note: Supports the round being used with 2S4 Tyulpan and describes it as a Soviet laser-guided mortar round developed in the 1980s. | Accessed: 2026-06-23 File:2S4 Tyulpan ARMY-2022.jpgPublisher: Wikimedia Commons | Note: Image provenance context for the catalog image used on this relationship page. | Accessed: 2026-06-23