M-4 Commando Mortar
The M-4 Commando Mortar also known as a "patrol mortar" is a lightweight 60 mm commando mortar manufactured by Denel Land Systems.[1]

Description
    
As with other mortars of this type it is intended for rapid use over short ranges as a fire support weapon. It has a lanyard operated trigger mechanism in the breech which allows it to be carried loaded with a bomb, unlike other mortars that have fixed firing pins. The lack of a bipod means it is not as accurate as a conventional mortar and is unsuitable for sustained fire use. The sighting system incorporated in the handle consists of a pair of curved spirit levels one to indicate that it upright in the lateral plane and the other indicates the range with a charge table. Beta lights illuminate the sight for night use.[2]
Ammunition
    
It uses the M-61 series of bombs in high explosive, smoke, illumination and practice versions.[2]
Variants
    
- M4: pulled a lanyard released the firing mechanism[3]
 - M4 Mk 1: equipped with a fixed firing pin[3]
 - M4L3: version with simplified baseplate and sight, range is shorter (1,200m).[3]
 
Users
    
    
Specifications
    

- Type: Muzzle loading mortar
 - Calibre: 60 mm
 - Mass: Total 7.2 kg - Barrel 3.2 kg - Breech 0.9 kg - Baseplate 1.9 kg - Sight/handle - 1.1 kg
 - Barrel length: 650 mm
 - Traverse: 300 mil
 - Elevation: 710 to 1510 mil
 - Muzzle velocity: 171 m/s
 - Range: 100 m minimum - 2100 m maximum
 
References
    
- "M4 60 mm Commando Mortar System" (PDF). Archived from the original (PDF) on 28 March 2016. Retrieved 21 March 2019., archived by the Internet Archive
 - Heitman, Helmoed-Römer (1988). Krygstuig van Suid Afrika. Cape Town: Struik. pp. 114–115. ISBN 086977638X.
 - Gander, Terry J. (2001). "Vektor 60 mm M4 series Commando mortars". Jane's Infantry Weapons 2002-2003. pp. 4031–4032.
 - "Land Systems Successful in South America" (PDF), Denel Insights, p. 4, September 2006, archived from the original (PDF) on 2016-03-03, archived by the Internet Archive
 
External links
    
- M4 mortar on Manufacturer's website, archived by the Internet Archive