"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

Nosler Suppressors Model 21 30 Caliber Titanium F
Nosler Suppressors Model 21 30 Caliber Titanium F

Trump Administration Moves to Streamline Suppressor Exports

Changes recently posted on the Federal Register by the Commerce Dept. and State Dept. on July 23 signal a major shift for the suppressor industry.

Review: Leupold VX-5HD 3-15x44 mm Gen 2 Riflescope

The Leupold VX-5HD Gen 2 is an updated and improved version of one of the most versatile lines of hunting optics on the market.

Ammo Makers Offer Savings Through Summer Rebates

Speer, Remington and Federal Ammunition have all announced summer rebates on select ammo offerings, giving consumers a chance to save on premium defensive loads.

Three Hidden Joys of the Rifle

There is a particular jolt of joy when a shooter nestles behind a perfectly stable rifle and puts the ideal bullet exactly where intended.

New For 2026: Smith & Wesson M&P15 AXE

The new Smith & Wesson M&P15 AXE is not only the latest in the company's series of AR-style rifles, it marks the first S&W rifle to be chambered for the .300 Blackout cartridge.

The Armed Citizen® July 27, 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.

Interests



Get the best of American Rifleman delivered to your inbox.