Mekanika Uru
Mekanika Indústria e Comércio Ltda. · Submachine Gun · Discontinued · 1977
Also known as: URU, Mekanika URU Model 2
Overview
The Mekanika Uru is a Brazilian blowback-operated, open-bolt submachine gun chambered in 9x19mm Parabellum. Designed by Olympio Vieira de Mello in 1974-75 and produced from 1977, it was built around a simple steel-tube receiver and barrel jacket with stamped steel components, prioritizing low-cost manufacture. It served the Brazilian Army and police forces and offers selective semi- and full-automatic fire from a 30-round box magazine.
Specifications
| Weight (empty) | 3900 g (137.6 oz) |
| Overall Length | 689 mm (27.13") |
| Folded Length | 456 mm (17.95") |
| Barrel Length | 175 mm (6.89") |
| Action Type | Blowback |
| Firing Mechanism | Open Bolt |
| Magazine Capacity | 30 rounds |
| Magazine Type | Detachable Box |
| Muzzle Velocity | 400 m/s (1312 fps) |
| Effective Range | 100 m (109 yd) |
| Rate of Fire | 750 rpm |
| Barrel Rifling | Right Hand |
| Frame Material | Steel |
| Barrel 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: Fire Selector Safety
- Features: Open Bolt Operation, Steel Tube Receiver, Removable Barrel, Wraparound Bolt
Service history
Operators
- Brazilian Army · adopted 1977
- Brazilian Police Forces
Production
Estimated total produced: 10,000 · Production years: 1977-1985
Approximately 10,000 units produced for Brazilian military and police use.
Origin
Country of origin: Brazil
Designer: Olympio Vieira de Mello
Discontinued: 1985
Notes
The Uru was designed for inexpensive mass production using steel tubing and stampings. It uses a wraparound (telescoping) bolt to keep the weapon compact. The barrel can be removed quickly without tools.
Background
Conceived as a cheap, easily produced submachine gun for Brazilian security forces, the Uru's steel-tube construction echoed the design philosophy of earlier mass-production submachine guns like the Sten and Madsen.