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

Hk G36 22Lr 1
Hk G36 22Lr 1

Gun of the Week: Heckler & Koch G36 .22 LR

Due to Germany's strict firearm-export laws, along with U.S. firearm import laws, the closest any HK fan could get to owning a real G36 was in the form of the HK SL8. Now, though, Heckler & Koch has introduced its G36 .22 LR, which, profile-wise, is a G36 in all but chambering.

The Armed Citizen® July 17, 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.

Standing Strong for Colorado’s Law-Abiding Gun Owners Ahead of Critical Midterms

NRA EVP Doug Hamlin and NRA-ILA Executive Director John Commerford traveled to Denver this week to discuss gun rights.

A Visit to the New Smith & Wesson Academy

Let the training (re)commence at Smith & Wesson's new Academy in Tennessee.

New for 2026: Leupold LCO Pro F2 Red-Dot Sight

The optic giant has updated its flagship red-dot sight with a host of upgraded features.

Rifleman Review: Heckler & Koch CC9

When Heckler & Koch USA launched its micro-compact CC9, it proved to be one of the most robustly built micro-compact handguns yet made.

Interests



Get the best of American Rifleman delivered to your inbox.