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Izhevsk MR-412 REX (Revolver for EXport)

Six-Shot Revolver (1993)

Infantry Small Arms / The Warfighter

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The Izhevsk MR-412 REX is an all-modern six-shot revolver originating from Russia.

Authored By: Staff Writer | Last Edited: 07/03/2018 | Content ©www.MilitaryFactory.com | The following text is exclusive to this site.
The MR-412 REX ("Revolver for EXport") (also "MP-412 PEKC") was a short-lived six-shot revolver emerging from Russia in the early 1990s by way of the Izhevsk Mechanical Plant. The sidearm was developed with the export market in mind and not any one standing Russian military / police requirement. At its core, it became a conventional revolver with the usual traits afforded such weapons and a relatively new addition to the world of pistols. However, the MR-412 REX never entered serial production due to restrictive gun import laws in the United States - the largest potential civilian market for export firearms.

The design saw a large polymer grip used that featured an integrated trigger loop ring encompassing the small, curved trigger. The hammer was only slightly exposed at the rear of the frame. Iron sights were positioned at their usual places over the frame (forward and aft). The barrel was encased in a slab-sided assembly at the front of the gun and the lower section of the frame was completed of polymers while the rest of the weapon remained high grade steel.

One of the unique features of this gun was its "break-open" frame (reminiscent of 19th Century pistols) in which the forward end of the gun could be pulled down by the operator, along a centralized hinge, to expose the cylinder for reloading. This was a deviation from the norm where modern revolvers typically featured "swing-out" cylinders for the same action. The gun was available in both .357 Magnum and .38 Special chamberings and operated from a Single-Action / Double-Action (SA/DA) trigger system. A 4" and 6" barrel were also offered. An automatic ejector was part of the MR-412's makeup.


Service Year

Russia national flag graphic


Six-Shot Revolver

Izhevsk Mechanical Plant - Russia
National flag of Russia Russia
(OPERATORS list includes past, present, and future operators when applicable)
Pistol / Sidearm
Compact design for close-quarters work or general self-defense.

Overall Length
282 mm
11.10 in
Barrel Length
152 mm
5.98 in
Empty Wgt
1.98 lb
0.90 kg

Iron Front and Rear.


Single-Action / Double-Action (SA / DA); Revolving Cylinder

(Material presented above is for historical and entertainment value and should not be construed as usable for hardware restoration, maintenance, or general operation - always consult official manufacturer sources for such information)


.357 Magnum; .38 Special

Sample Visuals**

Graphical image of a .357 Magnum pistol cartridge
Rounds / Feed

Six-Shot Revolving Cylinder
Cartridge relative size chart
*May not represent an exhuastive list; calibers are model-specific dependent, always consult official manufacturer sources.
**Graphics not to actual size; not all cartridges may be represented visually; graphics intended for general reference only.
Max Eff.Range
55 ft
(17 m | 18 yd)

MR-412 REX - Base Series Name
MR-412 PEKC - Alternative designation

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