Milkor 40mm UBGL grenade launcher
Africa by Milkor (Pty) Ltd. It can be attached to most modern assault weapons and rifles using a Picatinny rail system. The UBGL is capable of firing standard 40mm rounds including illumination and observation rounds (max length of 140 mm).
Milkor 40mm UBGL grenade launcher
- Name
- Milkor 40mm UBGL
- Field
- grenade launcher
- Region
- South Africa
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Documentary summary
Africa by Milkor (Pty) Ltd. It can be attached to most modern assault weapons and rifles using a Picatinny rail system. The UBGL is capable of firing standard 40mm rounds including illumination and observation rounds (max length of 140 mm).
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wikidata · Q15991107
In this article
Overview
Overview
Clip-on, clip-off mechanism allows the UBGL to be fitted, with an additional recoil buffer, to any weapon fitted with a Picatinny rail.
Key facts
Key facts
• Name — Milkor 40mm UBGL • Origin — South Africa • Type — Underslung grenade launcher • Is Ranged — yes • Designer — Andries Piek • Manufacturer — Milkor (Pty) Ltd • Variants — US-Mk 4 US-Mk 4S • Weight — 0.95kg without Sight (Ladder Sight: 155g) (Saddle Sight: 85g) (Reflex Sight: 210g) • Width — 60mm • Height — 90mm • Caliber — 40mm • Feed — Single shot • Range — 250m • Sights — Saddle, Ladder or Reflex Sight • Rate — 6 rounds per minute • Barrels — 6° constant rifling (1 turn in 1200mm) The Milkor 40mm UBGL grenade launcher is a lightweight single-shot, underslung grenade launcher designed and developed in South Africa by Milkor (Pty) Ltd. It can be attached to most modern assault weapons and rifles using a Picatinny rail system. The UBGL is capable of firing standard 40mm rounds including illumination and observation rounds (max length of 140 mm). Clip-on, clip-off mechanism allows the UBGL to be fitted, with an additional recoil buffer, to any weapon fitted with a Picatinny rail.
Design
Design
The UBGL is fitted with a steel barrel with constant-pitch rifling and swings to the side for loading and unloading of standard low-velocity 40mm cartridges. This enables the user to have a 40 mm grenade launcher capability together with an assault rifle. The UBGL can also be fired independently from a rifle (handheld) in an emergency. It can also be fitted to rifles and shotguns used in policing and is able to fire less lethal and lethal ammunition. The US-Mk 4 has a mass of 1.68 kg (empty), while the new US-Mk 4S weighs 0.750 kg with an aluminium barrel or around 1 kg with a steel barrel. A “push-button” trigger mechanism is used in place of an actual trigger in order to differentiate between firing mechanisms of the rifle and the under barrel as the soldier might invariably, under duress, tend to pull the incorrect trigger if presented with two triggers. The opening mechanism swings to the side in order to enable the user to load ammunition without external interference of the weapon it is mounted to or other complications.
Variants
Variants
• US-Mk 4 - Milkor 40mm UBGL Mk-4 • US-Mk 4S - Milkor 40mm UBGL Mk-4S
Similar weapons
Similar weapons
• M203 grenade launcher • AG36 • GP-25 • Pallad grenade launcher
Places
Named by the record
Places
Only places the record itself states, plotted where the house gazetteer settles their coordinates. Nothing is inferred from a name or a nationality.
- South Africa
Named but not plotted · 1
Milkor 40mm UBGL grenade launcher is associated with South Africa.
Country
Citations
References
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authority record
Secondary witness
The Encyclopedia exists whether or not anything is for sale. Corrections are recorded rather than overwritten, and every version of this record is kept. Published 16 August 2026.
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