"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

AIM Surplus Yugoslavian Zastava M70 .32 ACP Pistol
AIM Surplus Yugoslavian Zastava M70 .32 ACP Pistol

Review: Yugoslavian Zastava M70 .32 ACP Pistol

This tough little all-steel semi-automatic from AIM Surplus is an enjoyable option for military surplus pistol fans.

Henry Adds Adjustable-Sighted "Deadeye" Models To Revolver Lineup

The Deadeye versions of Henry’s Big Boy and Golden Boy revolvers add a fully adjustable rear sight and fixed front post sight with fiber-optic insert.

Gun of the Week: Chiappa Rhino 60 DS Revolver in 10 mm

Chiappa has launched a large-frame version of its unique revolver, including one chambered in 10 mm.

The Armed Citizen® Feb. 20, 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.

Review: Bergara B14 Stoke Rifle

Fit, comfort and precision for those that seek top-shelf performance—but need a step-stool to get there…

NFA Sales Up 121 Percent In January

Following the implementation of $0 tax stamps as of January 1, NFA sales skyrocketed in January, leading many to dub 2026 as the "Year of the Suppressor."

Interests



Get the best of American Rifleman delivered to your inbox.