Daewoo K7
S&T Motiv (formerly Daewoo Telecom / Daewoo Precision Industries) · Submachine Gun · In Service · 2001
Also known as: K7 SMG, K7 Silenced Submachine Gun, S&T Motiv K7
Overview
The Daewoo K7 is an integrally suppressed 9x19mm submachine gun developed by Daewoo Telecom (now S&T Motiv) in collaboration with the Korean Defense Agency for Technology and Quality, entering service in 2001. Based on the lower of the K1A carbine but reworked to a simple blowback action, it features a permanently attached integral suppressor surrounding a ported barrel, allowing subsonic-velocity fire without an external silencer. Designed as an indigenous Korean alternative to the H&K MP5SD.
Specifications
| Weight (empty) | 3380 g (119.2 oz) |
| Weight (loaded) | 3800 g (134.0 oz) |
| Overall Length | 790 mm (31.10") |
| Folded Length | 610 mm (24.02") |
| Barrel Length | 134 mm (5.28") |
| Action Type | Blowback |
| Firing Mechanism | Hammer Fired |
| Trigger Type | Single Stage |
| Magazine Capacity | 30 rounds |
| Magazine Type | Detachable Box |
| Muzzle Velocity | 305 m/s (1001 fps) |
| Muzzle Energy | 346 J (255 ft·lbf) |
| Effective Range | 150 m (164 yd) |
| Rate of Fire | 1100 rpm |
| Barrel Rifling | Right Hand |
| Number of Grooves | 6 |
| Frame Material | Aluminum |
| Barrel Material | Steel |
| Stock Material | Steel |
| Finish | Phosphate |
Calibers
- 9x19mm Parabellum · primary · 9mm NATO — also known as 9mm Luger, 9mm NATO, 9x19mm
Features
- Firing modes: Semi Automatic, Full Automatic
- Feed systems: Detachable Box Magazine
- Safety mechanisms: Selector Safety, Fire Mode Selector Safety
- Features: Integral Suppressor, Ported Barrel, Retractable Wire Stock, K1a Derived Lower, Uzi And Beretta M12 Magazine Compatible
Base model
Service history
Operators
- Republic of Korea Army Special Warfare Command · adopted 2001 · as K7
- ROK Navy UDT/SEAL
- Bangladesh SWADS
- KOPASSUS (Indonesian special forces)
Conflicts
- War in Afghanistan (2001-2021)
- Iraq War (2003-2011)
Production
Production years: 2001-present
Issued in limited numbers to ROK special operations forces and exported in small batches to allied special operations units. Production figures not openly published.
Origin
Country of origin: South Korea
Designer: Defense Agency for Technology and Quality (DTaQ) and Daewoo Telecom (development 1998-2000)
Notes
The K7 uses standard 9mm ammunition fired through a ported barrel; the suppressor and porting bleed gas to keep velocity subsonic. It accepts STANAG 9mm magazines as well as Uzi and Beretta M12 magazines. Issued to ROK special operations forces.
Background
The K7 was developed specifically because the H&K MP5SD was considered too expensive for wide ROK special-operations issue; Korea wanted a domestic, integrally suppressed SMG that could be produced at a fraction of German prices. The result reuses K1A carbine ergonomics so closely that Korean special forces troops can transition between the two weapons without retraining their manual of arms.