"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

Result Gp104
Result Gp104

Washington's Gunpowder Shortage: The Issue That Almost Ended the Revolution

Today, the United States is facing a shortage of ammunition. But this situation is nothing new, and a similar sort of circumstance faced our Founding Fathers at the beginning of the American Revolution.

Standing Guard | Be Thankful Your NRA Is Here

In any struggle, but particularly in one for human freedom, we should stop and look back now and then, as a backward glance can remind us of our true course.

The 92G Elite Combat LTT: A Beretta & Langdon Tactical Collaboration

Beretta continues refining and updating the 92 design, and its latest collaboration with Langdon Tactical Technologies resulted in the 92G Elite Combat LTT, a handgun designed for both competition and duty use.

Gun of the Week: Heckler & Koch CC9

The Heckler & Koch CC9 isn't merely just another micro-compact. It's the result of a significant amount of work on the part of the company's US subsidiary to create the first truly American-made HK.

The Armed Citizen® May 22, 2026

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

Political Report | Braced Pistols’ Status Unresolved

The U.S. Supreme Court has characterized handguns as the “quintessential” Second Amendment arm. Pistol braces increase accuracy and ease of operation for large-format handguns, especially for users suffering from physical disabilities.

Interests



Get the best of American Rifleman delivered to your inbox.