"M42" UD (United Defense) Submachine Gun

by
posted on April 24, 2014
** When you buy products through the links on our site, we may earn a commission that supports NRA's mission to protect, preserve and defend the Second Amendment. **
qathompson1.jpg

Q. In a history of the Office of Strategic Services (OSS) I was reading, the author made reference to procurement of the M42 submachine guns, but did not explain any further. Can you tell me what an M42 submachine gun is? Was this gun ever issued to conventional American or Allied troops?

A. No M42 submachine guns were issued to the American Armed Forces during the war, but it was supplied to several allied countries during the war, and it was an item of issue to the OSS for use in various clandestine-related operations. The M42 was invented by Carl Swebilius, who was affiliated with the firm of High Standard. High Standard developed the prototype and produced a few early versions of the gun, but the Marlin Firearms Co. manufactured approximately 15,000 of these guns.

Most were chambered in 9 mm, but a few .45 ACP versions were made as well. The M42 could accept a conventional box magazine and also had the ability to be used with staggered side-by-side magazines. Government records indicate that 2,405 9 mm Marlin MD 42 submachine guns were airdropped in France from January to October of 1944 for use by OSS-related resistance operations.

The MD 42 was an unremarkable submachine gun with no outstanding virtues or glaring vices. Since it was not an issue item to U.S. armed forces, it is a little- known arm today and extremely few examples survive.

-Bruce N. Canfield

Originally published September, 2006

Latest

Beretta AX800 01
Beretta AX800 01

Beretta AX800 Suprema: The Future Of Hunting Shotguns?

With its new AX800 Suprema, Beretta went back to the drawing board and developed an entirely new shotgun designed specifically for waterfowl hunting.

Preview: Daisy Woodland Trail Model 1999

The Daisy that Ralphie would want if he were still pining for a gravity-fed, lever-action BB gun in 2025, the feature-packed new Woodland Trail Model 1999 provides a modern update to the venerable platform while remaining highly affordable.

MidwayUSA Completes Corporate Office Building

Construction is complete on MidwayUSA’s new Roosevelt Corporate Offices Building, in Columbia, Mo., marking another major milestone in the company’s development of its 500-Year Campus.

The Best Of Both Worlds: EAA’s Girsan Witness2311 CMX

In expanding its presence in the realm of race-gun-inspired competition with the Witness2311 CMX, EAA Corp. and its Turkish manufacturing partner, Girsan, have produced one of their most significant collaborations to date.

The Armed Citizen® Dec. 1, 2025

Read today's "The Armed Citizen" entry for real stories of law-abiding citizens, past and present, who used their firearms to save lives.

Rifleman Q&A: Crates Of Cartridge Curiosities

"I have in my possession two interesting wooden boxes containing two sealed ammunition cans each. I initially assumed the cartridges to be corrosive-primed and marked them as such with a paint pen, but lately I am not so sure."

Interests



Get the best of American Rifleman delivered to your inbox.