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Mendoza C-1934 (M1934)

Light Machine Gun (LMG) [ 1934 ]

The Mendoza C-1934 was a light machine gun design in the same vein as the American M1918 BAR.

Authored By: Staff Writer | Last Edited: 08/01/2017 | Content ©www.MilitaryFactory.com | The following text is exclusive to this site.

Mexico is not a nation one thinks about when they think of indigenous firearms design and development. However, engineer Raphael Mendoza and his Productos Mendoza firm began work on a light machine gun automatic weapon in 1928 to which this continued through 1933. The weapon was intended to serve with the Mexican Army as its standard squad-level LMG. At its core, the weapon would serve the same function as the competing American M1918 BAR (Browning Automatic Rifle), augmenting the standard infantry squad with high-volume repeating firepower. Production of the new weapon - the "C-1934" (or "Mendoza Model B" of 1933) - was ordered in 1933 to which the series was formally adopted for service in 1934 (hence the designation). Despite the weapon owing much to the British Lewis and French Hotchkiss machine guns, the C-1934 was something of an evolutionary design in its own right - lighter than her contemporaries, cheaper to produce and just as effective and robust in-the-field.

Like the American BAR, the Mexican C-1934 sported a rifle-type exterior with a solid wood stock making up the gun body, forestock and integrated shoulder stock. The pistol grip was held under the rear portion of the receiver. The internal working components were all encased in metal and set within the wooden body shell. The "quick-change" barrel was affixed to the receiver at its base with the barrel protruding ahead, capped by a muzzle brake. A folding bipod was added to the end of the forestock for stabilization when firing. The weapon was fed by a 20-round magazines housing 7x57 Spanish Mauser cartridges and these were inserted into the top of the receiver. Due to the nature of the magazine fitting, the included iron rear and front sights were offset to allow for some aiming around the magazine installation. Overall length was 1,170 millimeters with the barrel measuring 630 millimeters. The internal action was gas-operated from an open bolt. Rate-of-fire was approximately 450 rounds per minute - the rather contained rate controlling barrel overheating. Muzzle velocity was 2,640 feet per second with an effective range out to 600 yards. Overall weight was in the vicinity of 8.4 kilograms. Unlike other light machine guns of the day, the C-1934 actually had provisions for selective fire, allowing for a safety, single-shot and full-automatic modes through a selector along the left side of the receiver. The charging handle was set to the right side.©MilitaryFactory.com
In practice, the C-1934 was well-remembered and a low-cost substitute against the more expensive offerings of the day. This budgeted approach, however, did not interfere with the quality construction and function inherent in the series. Infantrymen appreciated the rather handy and portable nature of the weapon and their fellow soldiers found comfort in its repeat fire nature. The weapon could be field-stripped in a relatively short amount of time, useful for repairs, general maintenance and cleaning after use. The weapon was designed with a down-folding stock/rear receiver which facilitated removal of both the bolt and gas piston system. The C-1934 remained in frontline service until 1945.

The C-1934 was later refined in 1945 in an effort to replace the use of the outdated 7x57mm Spanish Mauser cartridge with the readily available American .30-06 (30-caliber M1906) cartridge. This became the improved Mendoza Model 45 that introduced a refined receiver, new muzzle brake design and a shorter barrel.

In the latter years of World War 2 and in the months following, Mendoza released yet another refinement of the C-1934 and this became the Mendoza "RM-2", also chambered for the .30-06 cartridge as in the Model 45. The weapon was developed in response to the American military need for more automatic weapons to stock the war effort. However, the RM-2 did not have the anticipated market impact for Mendoza for the war ended in 1945 and nullified any contractual purchases from the US. Subsequent attempts by Mendoza to market it to the Mexican military also failed and the restrictive Mexican export laws precluded it from being sold overseas. At least 50 evaluation models were known to be produced of this variant.©MilitaryFactory.com
Note: The above text is EXCLUSIVE to the site www.MilitaryFactory.com. It is the product of many hours of research and work made possible with the help of contributors, veterans, insiders, and topic specialists. If you happen upon this text anywhere else on the internet or in print, please let us know at MilitaryFactory AT gmail DOT com so that we may take appropriate action against the offender / offending site and continue to protect this original work.


Service Year

Mexico national flag graphic


Light Machine Gun (LMG)

National flag of Mexico Mexico
(OPERATORS list includes past, present, and future operators when applicable)
Fire Support
Capable of suppressing enemy elements at range through direct or in-direct fire.

Overall Length
1,170 mm
46.06 in
Barrel Length
630 mm
24.80 in
Empty Wgt
18.52 lb
8.40 kg

Iron Front and Rear


Gas-Operated; Open Bolt

Open Bolt
System utilizes internal mechanism where bolt and associated working components are set to the rear of the receiver with no cartridge chambered; trigger actuation moves bolt forward, chambers cartridge, and fires bullet in single action - ultimately resetting during the complete cycle by way of the generated energy.
Gas-operated system is featured, typically involving a gas cylinder and rear-driven piston directing energy to the bolt component.
(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)


7x57mm Mauser

Sample Visuals**

Graphical image of a 7.92mm Mauser rifle cartridge
Rounds / Feed

20-round detachable box magazine
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
1,968 ft
(600 m | 656 yd)
Muzzle Velocity
2,640 ft/sec
(805 m/sec)

C-1934 - Base Series Designation; chambered for 7x57mm Spanish Mauser cartridge.
M1934 - Alternative Designation
Model 45 - Refined version; chambered for American .30-06 cartridge; shorter barrel; redesigned receiver; perforated muzzle brake; appearing 1945.
RM-2 - Wartime development based on the C-1934; chambered for .30-06 cartridge; sans quick-change barrel feature.

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Images Gallery

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Image of the Mendoza C-1934 (M1934)
Right side view of the Mendoza C-1934 Light Machine Gun

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