Interdynamic KG-9
Interdynamic AB · Pistol · Discontinued · 1980
Also known as: KG9, KG-9
Overview
The Interdynamic KG-9 is a blowback-operated, open-bolt semi-automatic pistol chambered in 9x19mm Parabellum. Developed by Interdynamic AB of Stockholm and marketed through its US subsidiary, it derived from the earlier MP-9 military machine pistol prototype and was built from inexpensive molded polymer and stamped steel parts. Its distinctive paramilitary styling, tube receiver and high-capacity magazines made it a low-cost civilian firearm, but its open-bolt design led the BATF to reclassify open-bolt examples as machine guns in 1982, ending production after roughly 2,500 units.
Specifications
| Weight (empty) | 1397 g (49.3 oz) |
| Overall Length | 318 mm (12.52") |
| Barrel Length | 127 mm (5.00") |
| Action Type | Blowback |
| Firing Mechanism | Striker Fired |
| Trigger Type | Single Action |
| Magazine Capacity | 32 rounds |
| Magazine Type | Detachable Box |
| Muzzle Velocity | 360 m/s (1181 fps) |
| Muzzle Energy | 481 J (355 ft·lbf) |
| Effective Range | 50 m (55 yd) |
| Barrel Rifling | Right Hand |
| Frame Material | Polymer |
| Slide Material | Steel |
| Barrel Material | Steel |
| Finish | Parkerized |
Calibers
- 9x19mm Parabellum · primary · 9mm NATO — also known as 9mm Luger, 9mm NATO, 9x19mm
Features
- Firing modes: Semi Automatic
- Feed systems: Detachable Box Magazine
- Safety mechanisms: Manual Safety
- Features: Open Bolt Operation, Threaded Barrel, Paramilitary Styling, Wraparound Barrel Shroud
Variants
- Interdynamic KG-99 - Closed Bolt
Service history
Operators
- Civilian market · adopted 1980
Production
Estimated total produced: 2,500 · Production years: 1980-1982
Approximately 2,500 open-bolt KG-9 pistols were produced before the 1982 BATF reclassification halted the design.
Origin
Country of origin: Sweden
Designer: George Kellgren, Carlos Garcia
Discontinued: 1982
Notes
The open-bolt KG-9 was superseded by the closed-bolt KG-99 after the 1982 BATF ruling; when Interdynamic AB became Intratec, the design evolved into the notorious TEC-9 family.
Background
The KG in KG-9 comes from designers George Kellgren and Carlos Garcia. Kellgren later left Interdynamic and founded Kel-Tec, while the lineage from the KG-9 through the KG-99 to the Intratec TEC-9 became one of the most controversial firearm families in American gun-control debates.