"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

Remington Model 1888
Remington Model 1888

I Have This Old Gun: Remington Model 1888

Following Remington's bankruptcy in 1888, a number of the company's unsold Model 1875s were discovered, and it was decided that something could be made from them.

Rifleman Review: Ruger RXM

In 2025, Ruger teamed up with Magpul to create the RXM pistol, a design that uses a chassis-style receiver anchored inside of a polymer grip frame.

New for 2026: Franklin Armory Prevail Rifle

Franklin Armory introduces the company's first bolt-action rifle, the Prevail.

Thinking Of Tinkering? Be Honest About Your Reasons.

There are often benefits to resurrecting an old gun, but cost savings isn’t usually one of them.

New For 2026: Woox High Grade Stocks and Fore-ends

Dress up your lever-action, shotgun or bolt-action rifle while adding functionality.

NRA Partners with ‘We the Free’ Streaming Network

The NRA partners with online streaming service We the Free to bring 2A content.

Interests



Get the best of American Rifleman delivered to your inbox.