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SNT Motiv K4


40mm Automatic Grenade Launcher (AGL)


South Korea | 1993



"The ST Motiv K4 Automatic Grenade Launcher of the South Korean Army is clearly influenced by the American Mk 19 series."

Performance
Performance specifications presented assume optimal operating conditions for the SNT Motiv K4. Information presented is strictly for general reference and should not be misconstrued as useful for hardware restoration or operation.
4,920 ft
1,499.6 m | 1,640.0 yds
Max.Eff.Range
350
Rounds-Per-Minute
Rate-of-Fire
790 ft/sec
241 m/sec
Muzzle Velocity
Physical
The physical qualities of the SNT Motiv K4. Information presented is strictly for general reference and should not be misconstrued as useful for hardware restoration or operation.
1,072 mm
42.20 in
O/A Length
412 mm
16.22 in
Barrel Length
76.06 lb
34.50 kg
Weight
Blowback
Action
40x53mm
Caliber(s)
Belt-Fed
Feed
Iron.
Sights
Variants
Notable series variants as part of the SNT Motiv K4 40mm Automatic Grenade Launcher (AGL) family line.
K4 - Base Series Designation


Authored By: Staff Writer | Last Edited: 09/12/2022 | Content ©www.MilitaryFactory.com | The following text is exclusive to this site; No A.I. was used in the generation of this content.

All modern, first-rate armies of the world field some form of Automatic Grenade Launcher (AGL). These are belt-fed weapons suitable for fire suppression efforts and can be fitted to defensive positions (firing from a heavy-duty tripod assembly) or mounted on vehicles and watercraft (via pintle mount). For the Republic of Korea Army (South Korea), the Daewoo Precision Industries "K4" fulfills this battlefield role. It entered service in 1993 and has seen combat in the wars in Afghanistan and Iraq and has also seen exposure in the Libyan Civil War.

Design work on the K4 spanned from 1985 to 1991 and was handled by the Agency for Defense Development. The weapon is a product of a decisive move by South Korean armed forces to reduce reliance on foreign military products. As such a whole line "K" weapons have since emerged and stocks the inventory of the modern South Korean Army. Many of the K-weapons are today (2017) produced under the S&T Motiv brand label.

In many ways, the South Korean K4 mimics the form and function of the well-established American-originated Saco Mk 19 AGL still in widespread use around the globe. Like the Mk 19, the K4 relies on the proven 40x53mm grenade which offers good concussion and explosive effects against target areas. The internal firing action is of basic blowback and feeding is by way a belt pulled from a hard case - projectiles enter the receiver from the left side and spent cases are ejected to the right. A rate-of-fire nearing 350 rounds-per-minute can be achieved and effective engagement ranges are out to 1,500 meters while areas out to 2,200 meters can be affected though with reduced accuracy. Sighting is through a flip-up rear aperture.

The single-shot, under-barrel launcher form of the K4 is the "K201" detailed elsewhere on this site. This more compact weapon provides a grenadier capability to the standard infantryman and broadens his tactical value in the field.

Beyond South Korea, the K4 has been purchased by Libya (becoming the product's first export customer in 2009) and Mexico (becoming an operator in 2011).

Content ©MilitaryFactory.com; No Reproduction Permitted.
Operators
Global customers who have evaluated and/or operated the SNT Motiv K4. Nations are displayed by flag, each linked to their respective national small arms listing.

Contractor(s): SNT Motiv (Daewoo Precision) - South Korea
National flag of Libya National flag of Mexico National flag of South Korea

[ Libya; Mexico; South Korea ]
1 / 1
Image of the SNT Motiv K4
Image from official SNT Motiv marketing materials.

Going Further...
The SNT Motiv K4 40mm Automatic Grenade Launcher (AGL) appears in the following collections:
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