Stratfor reported southern Syrian rebels using RBG-6 multiple grenade launchers in February 2013, and OCCRP/BIRN later identified Croatian-made RBG-6 launchers in Syrian armed-group imagery and weapons flows.
Infantry Weapons
RBG-6
Also known as
- RBG 6
- RBG-6 multiple grenade launcher
- RBG-6 MGL
- Multiple Grenade Launcher mod. RBG-6
The RBG-6 is a Croatian 40x46 mm shoulder-fired revolving grenade launcher from M Adler D, built around a semi-automatic gas-operated action, a six-round cylinder, and low-velocity grenade ammunition for infantry fire support. Direct Syria reporting documented RBG-6 launchers among opposition weapons flows, while official Croatian export and manufacturer pages describe the weapon's squad-firepower role, sighting arrangement, barrel versions, and ammunition family.
Role in Conflicts
Profile / Specs
Profile
- Origin
- Croatia
- Built by
- M Adler D
- Type
- 40x46 mm six-shot revolving grenade launcher
- Service note
- Contemporary
- Designer
- M Adler D
- Produced
- Current production
Specifications
- Caliber
- 40x46 mm low-velocity grenades
- Operating system
- Semi-automatic, gas-operated; spring-driven revolving cylinder
- Configuration
- Shoulder-fired, one-person weapon system with a six-chamber revolving cylinder
- Effective range
- 375 m; 400 m maximum range
- Muzzle velocity
- 76 m/s
- Rate of fire
- Up to 12 grenades per minute; source also describes one round per second fire with suitable rounds
- Weight
- 5.4-5.5 kg empty
- Dimensions
- 566 mm with butt folded; 777 mm with butt extended; 260 mm high; 158 mm wide
- Sighting
- Occluded Eye Gun Sight / red-dot sight calibrated from 0 to 375 m in 25 m increments on a Picatinny rail
- Ammunition types
- 40x46 mm low-velocity HE, HEDP, TP, smoke, incendiary, pyrotechnic, irritant, and anti-riot baton rounds
- Barrel
- Military version has a rifled, hard-chromed barrel with six progressive right-hand grooves; police version has a smooth barrel
- Environmental range
- -40 C to +75 C
Design Details
Cylinder
The six-round drum uses a spring-driven, gas-operated revolver mechanism and includes an easy-emptying feature for unloading.
Stock and sight
A three-position folding stock can be raised as range increases, and the Occluded Eye Gun Sight is calibrated in 25 m steps from 0 to 375 m.
Barrel versions
Agencija Alan distinguishes a rifled military barrel from a smooth police barrel; the rifled barrel has six progressive right-hand grooves and hard-chrome internal protection.
Variants
Public product pages distinguish the RBG-6 mainly by barrel and service configuration rather than by a broad family of separate designations.
| Variant | Configuration | Designation notes |
|---|---|---|
| Military RBG-6 | Rifled-barrel infantry version | Agencija Alan describes the military version as having a rifled, hard-chromed barrel with six grooves and progressive right-hand twist. Sources: Agencija Alan RBG-6 Product Page |
| Police RBG-6 | Smooth-barrel police version | Agencija Alan distinguishes a smooth-barrel police version from the rifled military version. Sources: Agencija Alan RBG-6 Product Page |
Timeline
RBG-6 Key Events
RBG-6 reported in southern Syria
Stratfor reported that rebels in southern Syria were using RBG-6 multiple grenade launchers as weapons moved through Jordan into the southern Syrian battlefield.
Sources: Stratfor Syria-Bound Weapons Through Jordan
Croatian-made RBG-6 documented in Syria imagery
OCCRP/BIRN cited a March 2016 image of a fighter in Syria with a Croatian-made RBG-6 and described additional RBG-6 images from Syria in 2015-2016.
Sources: OCCRP Croatian Arms Sales to Saudi Arabia Fuel Syrian War
Export-market coverage notes Middle East interest
Defence Blog reported M Adler D promotion of the 40 mm RBG-6 for military, security, law-enforcement, and special-forces customers in Middle Eastern markets.
Sources: Defence Blog RBG-6 Middle East Interest
Related Weapon Systems
Sources
M Adler D RBG-6 Product PagePublisher: M Adler D | Note: Supports official RBG-6 identity, manufacturer context, infantry-weapon role, and product imagery. | Accessed: 2026-07-13M Adler D Product DataPublisher: M Adler D | Note: Supports RBG-6 specifications including caliber, operating system, range, capacity, weight, dimensions, and official image paths. | Accessed: 2026-07-13Agencija Alan RBG-6 Product PagePublisher: Agencija Alan | Note: Supports RBG-6 design details and specifications including spring-driven gas-operated cylinder, easy-emptying drum, supported ammunition types, stock and sighting arrangement, barrel versions, rifling, trigger force, and listed range/weight/dimensions. | Accessed: 2026-07-13M Adler D Capabilities PagePublisher: M Adler D | Note: Supports official manufacturer context for in-house design and production capabilities and the listed RBG-6 operating temperature envelope. | Accessed: 2026-07-13Stratfor Syria-Bound Weapons Through JordanPublisher: Stratfor / RANE | Note: Supports 2011 Syrian Civil War direct use by reporting that rebels fighting in southern Syria were using RBG-6 multiple grenade launchers. | Accessed: 2026-07-13OCCRP Croatian Arms Sales to Saudi Arabia Fuel Syrian WarPublisher: Organized Crime and Corruption Reporting Project | Note: Supports 2011 Syrian Civil War direct-use context by identifying Croatian-made RBG-6 grenade launchers in Syrian armed-group imagery and weapons flows. | Accessed: 2026-07-13OCCRP Croatia Shipped Arms to JordanPublisher: Organized Crime and Corruption Reporting Project | Note: Supports 2011 Syrian Civil War direct-use context by reporting Croatian-made RBG-6 launchers among weapons appearing with Syrian fighters after Croatia-Jordan arms shipments. | Accessed: 2026-07-13Defence Blog RBG-6 Middle East InterestPublisher: Defence Blog | Note: Supports export-market context, RBG-6 ammunition compatibility, folding-stock description, rate-of-fire wording, and dimensions/weight corroboration. | Accessed: 2026-07-13