Daewoo Precision Industries K4
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The Daewoo Precision Industries K4 (Korean: K4 고속유탄기관총; Hanja: K4 高速榴彈機關槍) is a 40×53mm high-speed automatic grenade launcher in use with the Republic of Korea Armed Forces.
The K4 was developed as a complement to the K-201 hand-held grenade launcher (attachable to the K2).
History
The K4 was first developed in 1994.
Design
It has a weight of 34.4 kg (empty, without accessories) and can fire up to 325 rounds per minute with a firing range of 1.5 km. When needed to be used during night operations, a KAN/TVS-5 night vision scope can be attached onto the receiver.
The K4 is said to visually resemble the Mk 19 AGL.
Users

- Iraq: Small numbers used by Iraqi special forces on Humvees.
- Libya: First export customer, purchased the K4 in 2009.
- Mexico: Purchased since 2011.
- Poland: Several hundred K4s ordered in 2022.
- South Korea
- Singapore: 17 K4s transferred according to a 2019 SIPRI small arms report.
See also
- AGS-17 – (Soviet Union)
- AGS-30 – (Russia)
- AGS-40 – (Russia)
- GMW – (Germany)
- Mk 19 – (United States)
- Mk 47 – (United States)
- List of API blowback firearms
- List of grenade launchers