"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

Fiocchi’s new Hyperformance SBR Enhanced line of ammunition
Fiocchi’s new Hyperformance SBR Enhanced line of ammunition

Selling Short: Fiocchi's Hyperformance SBR Enhanced Ammunition

Fiocchi’s new Hyperformance SBR Enhanced line of ammunition isn’t a mere marketing gimmick. It’s designed for top performance out of short-barreled rifles, and it delivers.

New For 2026: Yankee Hill Machine Victra-20 Shotgun Suppressor

Yankee Hill Machine introduced its VICTRA-12, a modular 12-ga. shotgun suppressor, last year. This year, the company is bringing out a 20-ga. version with the VICTRA-20.

The Armed Citizen® June 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.

Important Notice To Members: Exercise Your Rights. Assist In The Nomination Of Directors.

The NRA Bylaws provide for the election of one-third of the members of the Board of Directors each year. Those terms of office will expire at the 2027 Annual Meeting of Members in Atlanta, Georgia, on April 24, 2027.

Skills Check: Pistol Standard Xray 2 Drill

Examine and strengthen each part of your presentation and shot in this revealing drill.

Gunsite at 50: Celebrating a Golden Anniversary

It’s no secret Gunsite Academy is celebrating its Golden Anniversary this year. In August, it’s holding a 50th Anniversary Alumni Shoot to celebrate five decades of training excellence, tradition and community.

Interests



Get the best of American Rifleman delivered to your inbox.