Infantry Weapons

Arcus 40 UBGL

Also known as
  • ARCUS 40 UBGL
  • Arcus 40 UBGL 40x46mm Under-Barrel Grenade Launcher
  • Arcus 40 Under-barrel Grenade Launcher
  • Arcus 40mm UBGL
  • 40x46mm Arcus 40 UBGL
  • 40 x 46 mm Arcus 40 UBGL
  • Arcus 40 UGBL

The Arcus 40 UBGL is a Bulgarian 40x46 mm under-barrel grenade launcher made by Arcus JSC for Kalashnikov-pattern rifles, with official listings describing AK-47/AK-74 mounting, M406-type low-velocity grenades, and a 400 m effective range.

Arcus 40 UBGL, 40x46 mm under-barrel grenade launcher, Infantry Weapons
Image source: Arcus 40 UBGL 40 x 46 mm Underbarrel Grenade Launcher
Profile / Specs

Profile

Origin
Bulgaria
Built by
Arcus JSC
Type
40x46 mm under-barrel grenade launcher
Produced
Listed by Arcus JSC in current online product catalogs; no start or end production year found in high-quality public sources

Specifications

Caliber
40x46 mm
Ammunition
Type M406 low-velocity grenades
Effective range
400 m
Muzzle velocity
75 m/s maximum
Rate of fire
Minimum 5 shots/min
Launcher weight
1.65 kg
Launcher length
400 mm
Launcher type
Pump-action
Aiming device
Direct and ballistic-fire aiming device
Barrel life
Minimum 800 shots
Compatible rifles
AK-47 and AK-74 Kalashnikov assault rifles
Variants

Arcus lists the original Arcus 40 UBGL beside the Arcus 40A4 EGLM in its 40x46 mm M406-type under-barrel launcher family for Kalashnikov-pattern rifles.

VariantConfigurationDesignation notes
Arcus 40A4 EGLMPicatinny-adapter 40x46 mm under-barrel variant

Arcus describes the 40A4 EGLM as a 40x46 mm under-barrel launcher attached to AR-MI and AR-MIF AK-series rifles by a hand-guard adaptor with Picatinny rails.

Sources: Arcus 40A4 EGLM 40mm Under Barrel Grenade Launcher, Arcus Grenade Launchers

Compatible Rifles

Arcus documents the 40 UBGL as an under-barrel launcher for Kalashnikov-pattern AK-47 and AK-74 rifles.

Compatible itemItem typeCompatibility evidence
AK-47/AKM rifle family, Selective-fire assault rifle family, Infantry WeaponsAK-47/AKM rifle familyKalashnikov-pattern assault rifle family

Arcus describes the launcher as mounted under AK-47 Kalashnikov assault rifles and lists the AK-47 as a compatible weapon.

Sources: Arcus 40 UBGL 40 x 46 mm Underbarrel Grenade Launcher

AK-74, Assault rifle, Infantry WeaponsAK-74Assault rifle

Arcus describes the launcher as mounted under AK-74 Kalashnikov assault rifles and lists the AK-74 as a compatible weapon.

Sources: Arcus 40 UBGL 40 x 46 mm Underbarrel Grenade Launcher

40x46 mm Ammunition

Arcus describes the 40 UBGL as a 40x46 mm launcher intended to fire M406-type low-velocity grenades to 400 m. Its product page also lists compatible 40x46 mm grenade types including AR406 HE-SD, AR433 HEDP-SD, AR466 ABHE, AR476 Anti-Diver, and AR407 target-practice rounds.

Related Weapon Systems
RBG-6, 40x46 mm six-shot revolving grenade launcher, Infantry WeaponsInfantry WeaponsRBG-640x46 mm six-shot revolving grenade launcherThe 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.

Sources

Arcus 40 UBGL 40 x 46 mm Underbarrel Grenade LauncherPublisher: Arcus JSC | Note: Supports the system name, Arcus manufacturer attribution, 40x46 mm caliber, M406-type ammunition, AK-47/AK-74 mounting, compatible 40x46 mm grenade types, key technical specifications, and official product image. | Accessed: 2026-07-13Arcus Grenade LaunchersPublisher: Arcus JSC | Note: Supports Arcus product-family context by listing the 40x46 mm Arcus 40 UBGL and Arcus 40 EGLM separately from the company's VOG-25 grenade-launcher family. | Accessed: 2026-07-13Arcus 40A4 EGLM 40mm Under Barrel Grenade LauncherPublisher: Arcus JSC | Note: Supports Arcus 40A4/EGLM variant identity, AR-MI/AR-MIF AK-series attachment by Picatinny hand-guard adaptor, compatible grenade types, and technical specifications. | Accessed: 2026-07-13