Munitions

RTB-7MA RPG round

Also known as
  • RTB-7MA
  • 40/106 mm RTB-7MA
  • 40/106 mm Round RTB-7MA
  • GTB-7MA
  • 40/106 mm Round RTB-7MA with Thermobaric Grenade GTB-7MA
  • Thermobaric Grenade GTB-7MA

The RTB-7MA is a Bulgarian 40/106 mm thermobaric round for RPG-7-family launchers, built around a GTB-7MA warhead, CP-73 booster, SM-71 sustainer motor, and AF-76 point-detonating fuze. Product data frames it as an anti-personnel and anti-materiel round for shelters, fortifications, buildings, light armored vehicles, and automobiles, while open-source reporting places it with Boko Haram- and ISWAP-linked materiel in Nigeria and Ukrainian forces around Bakhmut.

RTB-7MA RPG round, 40 mm thermobaric RPG round for RPG-7-family launchers, Munitions
Image source: 40mm Round RTB-7MA Thermobaric Grenade

Role in Conflicts

2009 Boko Haram Insurgency
Role in conflict
Thermobaric RPG fire support round

Open-source reporting in Borno State and conflict materiel reviews identified RTB-7MA rounds with Boko Haram- and ISWAP-linked fighters after 2015.

Profile / Specs

Profile

Origin
Bulgaria
Built by
Arsenal JSCo
Type
40 mm thermobaric RPG round for RPG-7-family launchers
Service note
Modern RPG-7 thermobaric round documented in 2013 catalogues and 2020s conflict imagery
Designer
Arsenal JSCo
Unit cost
Not publicly documented

Specifications

Caliber
40 mm launch diameter / 106 mm warhead diameter
Warhead
GTB-7MA thermobaric grenade
Propulsion
CP-73 start booster and SM-71 sustainer motor
Round weight
4.6 kg
Muzzle velocity
70 m/s
Maximum range
1,100 m
Fuze
AF-76 point-detonating fuze with super-quick and graze function
Launcher compatibility
RPG-7V and compatible 40 mm anti-tank grenade launchers
Design Notes

Bulcomer describes the RTB-7MA as an improved thermobaric round for RPG-7V launchers, built around a booster, sustainer, and point-detonating fuze.

FeatureDocumented detail
WarheadGTB-7MA thermobaric grenade
PropulsionCP-73 start booster and SM-71 sustainer motor
FuzeAF-76 point-detonating fuze with super-quick and graze function
Intended targetsPersonnel in the open, field shelters, battlefield fortifications, reinforced buildings, light armored vehicles, and automobiles

Source: 40mm Round RTB-7MA Thermobaric Grenade.

Variants

The RTB-7MA sits in a Bulgarian RPG-7V/ATGL-L-compatible ammunition set that uses different prefixes for thermobaric, fragmentation, and HEAT roles.

VariantConfigurationDesignation notes
RTB-7MA with GTB-7MA thermobaric grenadeThermobaric round configuration

Bulcomer identifies the RTB-7MA round as built around the GTB-7MA thermobaric grenade, CP-73 start booster, SM-71 sustainer motor, and AF-76 fuze.

Sources: 40mm Round RTB-7MA Thermobaric Grenade

OGi-7MA RPG round, 40 mm high-explosive fragmentation RPG round, MunitionsOGi-7MA RPG roundFragmentation anti-personnel sibling round

Arsenal-linked product data for OGi-7MA describes a separate RPG-7V/ATGL-L-compatible fragmentation anti-personnel round.

Sources: 40 mm Round improved Fragmentation Anti-Personnel Round OGi-7MA

RHEAT-7MA2 RPG round, 40/73 mm HEAT round for RPG-7V-pattern launchers, MunitionsRHEAT-7MA2 RPG roundHEAT anti-armor sibling round

Yugoimport product data describes RHEAT-7MA2 as an improved RPG-7V anti-tank round built around the GHEAT-7MA2 grenade.

Sources: 40/73 mm Round RHEAT-7MA2 with Anti-Tank Grenade GHEAT-7MA2

Launch Platforms

Bulcomer lists the RTB-7MA as an RPG-7V-compatible 40 mm round, and Ukrainian reporting specifically describes it as used with RPG-7 launchers.

Firing weaponWeapon typeFiring evidence
RPG-7, Reusable shoulder-fired anti-tank rocket launcher, Infantry WeaponsRPG-7Launcher family

Bulcomer explicitly lists RPG-7V compatibility for the RTB-7MA round, and Militarnyi described Ukrainian use of the munition with RPG-7 launchers.

Sources: 40mm Round RTB-7MA Thermobaric Grenade, Ukrainian military uses Bulgarian thermobaric grenades

RPG-7V Ammunition Context

Cataloged Bulgarian rounds around the same RPG-7V/ATGL-L compatibility niche split into different battlefield roles rather than one interchangeable projectile type.

RoundRoleCatalog context
RTB-7MAThermobaric anti-personnel and anti-materiel roundBulcomer lists GTB-7MA thermobaric warhead, CP-73 booster, SM-71 sustainer motor, and AF-76 fuze details.
OGi-7MA RPG round, 40 mm high-explosive fragmentation RPG round, MunitionsOGi-7MA RPG roundFragmentation anti-personnel roundArsenal-linked product data identifies OGi-7MA as a distinct fragmentation round for RPG-7V and ATGL-L launchers.
RHEAT-7MA2 RPG round, 40/73 mm HEAT round for RPG-7V-pattern launchers, MunitionsRHEAT-7MA2 RPG roundHigh-explosive anti-tank roundYugoimport product data describes RHEAT-7MA2 as a 40/73 mm RPG-7V anti-tank round with a GHEAT-7MA2 grenade.

Sources: 40mm Round RTB-7MA Thermobaric Grenade; 40 mm Round improved Fragmentation Anti-Personnel Round OGi-7MA; 40/73 mm Round RHEAT-7MA2 with Anti-Tank Grenade GHEAT-7MA2.

Timeline

RTB-7MA RPG round Key Events

  1. Bulcomer publishes the RTB-7MA product page

    Bulcomer's product page presents the RTB-7MA as an improved, modernized thermobaric round for RPG-7V launchers and lists its published technical data.

    Sources: 40mm Round RTB-7MA Thermobaric Grenade

  2. HumAngle reports RTB-7MA imagery in Borno State

    HumAngle's article on an ISWAP-captured armored personnel carrier says fighters in the scene carried a Bulgarian RTB-7MA thermobaric projectile.

    Sources: ISWAP Captures Refurbished Armoured Personnel Carrier

  3. Ukrainian Bakhmut-area use is reported

    Militarnyi reported that Ukrainian soldiers fired Bulgarian RTB-7MA thermobaric RPG-7 ammunition during fighting on the outskirts of Bakhmut.

    Sources: Ukrainian military uses Bulgarian thermobaric grenades

Media

RTB-7MA RPG round Videos

Related Weapon Systems
OGi-7MA RPG round, 40 mm high-explosive fragmentation RPG round, MunitionsMunitionsOGi-7MA RPG round40 mm high-explosive fragmentation RPG roundThe OGi-7MA is a Bulgarian 40 mm high-explosive fragmentation round for RPG-7V-family launchers and Arsenal's ATGL-L recoilless guns. Arsenal describes it as an improved, pre-fragmented anti-personnel round with more than 1,250 fragments and AF76 or AF72 point-detonating fuzes, while conflict reporting places it with Boko Haram factions in the Lake Chad basin, Islamic State forces in north-east Syria, and Ukrainian forces around Bakhmut.
RPG-7, Reusable shoulder-fired anti-tank rocket launcher, Infantry WeaponsInfantry WeaponsRPG-7Reusable shoulder-fired anti-tank rocket launcherThe RPG-7 is a Soviet-origin reusable shoulder-fired rocket launcher built around a simple 40 mm launch tube and a wide family of over-caliber anti-armor, fragmentation, and thermobaric rounds. Its low cost, portability, and large global stock make it a common infantry anti-armor and assault weapon, including documented Ukrainian service, Hamas use in Gaza, ISWAP use in the 2009 Boko Haram Insurgency, and insurgent use in Afghanistan.
PG-7VM rocket-propelled grenade, RPG-7 HEAT rocket-propelled grenade round, MunitionsMunitionsPG-7VM rocket-propelled grenadeRPG-7 HEAT rocket-propelled grenade roundThe PG-7VM is an RPG-7-compatible high-explosive anti-tank round built around the smaller PG-7M-class shaped-charge grenade. VMZ Sopot and STV Group publish closely aligned data for a roughly 1.97 kg round with a 300 m direct-fire range, 500 m sighting range, and about 300 mm armor penetration; conflict evidence documents the round in PKK, Islamic State, and Iraqi insurgent stocks, usually as seized or photographed ammunition rather than a named firing incident.
PG-7VL rocket-propelled grenade, RPG-7-compatible HEAT rocket-propelled grenade round, MunitionsMunitionsPG-7VL rocket-propelled grenadeRPG-7-compatible HEAT rocket-propelled grenade roundThe PG-7VL is a Soviet-origin RPG-7-compatible high-explosive anti-tank round, also associated with the Luch designation and PG-7L grenade. Russian and Bulgarian product sources describe a 93 mm warhead, roughly 2.6 kg round weight, 300 m sighting or effective range, and about 500 mm armor penetration; conflict documentation places PG-7VL projectiles in Islamic State and PKK weapons stocks rather than tying them to a named firing incident.

Sources

40mm Round RTB-7MA Thermobaric GrenadePublisher: Bulcomer S.K.S. | Note: Supports RTB-7MA specifications, RPG-7V compatibility, intended target set, component description, and image provenance for the product image. | Accessed: 2026-06-30Munition, projectile, RTB-7MAPublisher: Fenix Insight METIS | Note: Supports Bulgarian manufacture, Arsenal JSCo development, component description, and general RTB-7MA background. | Accessed: 2026-06-3040 mm Round improved Fragmentation Anti-Personnel Round OGi-7MAPublisher: Sourcehere / Arsenal 2000 JSCo | Note: Supports adjacent Arsenal-linked RPG-7V/ATGL-L ammunition family context for the OGi-7MA fragmentation round. | Accessed: 2026-06-3040/73 mm Round RHEAT-7MA2 with Anti-Tank Grenade GHEAT-7MA2Publisher: Yugoimport-SDPR | Note: Supports adjacent RPG-7V ammunition family context for the RHEAT-7MA2 high-explosive anti-tank round. | Accessed: 2026-06-30The Management of Lethal Materiel in Conflict SettingsPublisher: IPIS Research | Note: Supports 2009 Boko Haram Insurgency direct-use context: RTB-7MA rounds are listed among materiel identified as in service with and fielded by Boko Haram operatives after 2015. | Accessed: 2026-06-30ISWAP Captures Refurbished Armoured Personnel CarrierPublisher: HumAngle | Note: Supports 2009 Boko Haram Insurgency direct-use context: ISWAP imagery from Borno State showed fighters with a Bulgarian RTB-7MA thermobaric projectile fielded by ISWAP. | Accessed: 2026-06-30Ukrainian military uses Bulgarian thermobaric grenadesPublisher: Militarnyi | Note: Supports 2014 Russia-Ukraine War direct-use context: Ukrainian soldiers fired Bulgarian RTB-7MA thermobaric RPG-7 ammunition during fighting on the outskirts of Bakhmut. | Accessed: 2026-06-30乌克兰部队最近在前线部署了非常强大的保加利亚RTB-7MA温压弹Publisher: Sina | Note: Supports 2014 Russia-Ukraine War direct-use context: the article says Ukrainian forces used the RTB-7MA on the front line. | Accessed: 2026-06-30