MP-412 REX
Izhevsk Mechanical Plant · Pistol · Prototype · 1993
Also known as: IZH-412, MR-412 REX
Overview
The MP-412 REX is a Russian six-shot, top-break double-action/single-action revolver chambered in .357 Magnum (also firing .38 Special), designed at the Izhevsk Mechanical Plant in the 1990s. It features a hinged top-break frame with a self-actuating star extractor for fast simultaneous ejection of all spent cases, and a lightweight lower frame that combines steel with polymer components. Offered with either a 4-inch or 6-inch barrel, it was developed primarily for the export market but never reached serial production.
Specifications
| Weight (empty) | 900 g (31.7 oz) |
| Overall Length | 232 mm (9.13") |
| Barrel Length | 102 mm (4.02") |
| Action Type | Break Action |
| Firing Mechanism | Double Action Single Action |
| Trigger Type | Double Action |
| Magazine Capacity | 6 rounds |
| Magazine Type | Internal |
| Effective Range | 50 m (55 yd) |
| Barrel Rifling | Right Hand |
| Frame Material | Steel |
| Barrel Material | Steel |
| Finish | Blued |
Calibers
- .357 Magnum · primary — also known as .357 Mag, .357 S&W Magnum, 9x33mmR
- .38 Special — also known as .38 Spl, .38 S&W Special, 9x29mmR
Features
- Firing modes: Repeating
- Feed systems: 6-Round Cylinder
- Safety mechanisms: Transfer Bar Safety, Rebounding Hammer
- Features: Top Break Action, Automatic Ejector, Composite Steel Polymer Lower Frame, Adjustable Rear Sight
Variants
- MP-412 REX (6-inch barrel) - Barrel Length
Production
Production years: 1990s (prototype/limited)
Never entered serial production; only prototype and small pre-production quantities were built
Origin
Country of origin: Russia
Notes
Chambered for .357 Magnum and .38 Special. The top-break design allows rapid reloading with a speedloader; the whole cylinder tips forward on a hinge and the extractor throws out all six cases at once.
Background
The REX was aimed at the lucrative American revolver market, but its export ambitions were killed by a voluntary agreement between Presidents Clinton and Yeltsin that curtailed imports of Russian firearms into the United States, leaving the gun stranded as a promising prototype.