Book Review: The US M3/M3A1 Submachine Gun

The Complete History Of America’s Famed “Grease Gun”

by
posted on September 21, 2021
** 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. **
The US M3/M3A1 Submachine Gun:  The Complete History Of America’s Famed “Grease Gun”

Until now, if you wanted to read anything in depth on the M3 “grease gun,” there was only one standalone publication available, Frank Iannamico’s The U.S. M3-3A1 Submachine Gun, a 166-page paperback published in 1999. Other than that fine tome, to find any useful information on the M3 you would have to wade through a multitude of books on the Thompson or other compilation compendiums.

Michael Heidler, no stranger to writing about firearm history, has produced a most impressive volume on one of this author’s favorite World War II firearms, the M3 “grease gun.” This new book is very impressive and informative, belonging on your shelf if you have even the slightest interest in World War II firearms, their development and use.

Heidler starts off with an enlightening chapter on the state of affairs within the U.S. Army Ordnance Dept.’s inventory of submachine guns (SMGs) prior to World War II. That is to say, up until 1939, there were Thompsons, and only 15,000 of them, to be exact. With the war in Europe starting in 1939, some effort was made by various private designers and firms to market a new SMG. Reising, Hyde-Inland, S&W, Star and High Standard, among others, all had potential contributions, but it was the M3 from the Inland Division of General Motors that found favor with the Ordnance Board and was adopted in January 1943. At a cost to the government of only $15 compared to the Thompson that cost $120, the M3 and its successor, the M3A1, were initially intended to replace the Thompson, but manufacturing delays contributed to only 650,000 “grease guns” being manufactured compared to 1.5 million Thompsons.

Heidler’s book is breathtaking in its scope. From copies of the various patents to the technical and field manuals issued with the gun, it is resplendent with up-close color photographs of remarkable clarity and detail. While collecting M3s is out of the price range of most of us, this is still a great reference for identifying the many variants and accessories that were issued with this workhorse of our armed forces for more than 50 years. This book will definitely be a reference that will be consulted for years to come. Retail price from Schiffer Publishing comes to $45.

To learn more, please visit schifferbooks.com.

Latest

Match Ready M1 Garand 1
Match Ready M1 Garand 1

Making a Match-Ready M1 Garand

For decades, fans of the M1 Garand have gone to Camp Perry to shoot the John C. Garand match, a test of their shooting skills and rifles. Here, one M1 Garand enthusiast prepares his rifle and ammo for the shoot.

Will the USPS Allow Handguns to Be Mailed?

The U.S. Postal Service (USPS) on April 2, 2026, published a proposed rule that would permit the mailing of lawful handguns through the U.S. mail for the first time in nearly a century.

The Trijicon AccuPoint 1-8x24 mm: A Flexible Optic for Dangerous Game Hunting

Trijicon is probably best known for its military and law-enforcement optics, but the company is also serious about its commercial line of riflescopes designed for hunting.

U.S. Army Bases Will No Longer Be Gun-Free Zones

U.S. Secretary of War Pete Hegseth announced this week that U.S. Army bases will no longer be gun-free zones.

Gun of the Week: CZ Shadow 2 Carry

One of the latest concealed-carry handguns to hit the consumer market is the CZ's Shadow 2 Carry. Watch our "Gun of the Week" episode to see the details of this carry-oriented design.

The Armed Citizen® April 3, 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.