Video: M1A1 Thompson Submachine Gun

by
posted on February 26, 2016
** 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 U.S.-made Thompson Submachine Gun was developed by Gen. John T. Thompson, who envisioned a "one-man, hand-held machine gun" in .45 ACP for use in the ongoing trench warfare of World War I. But the war ended before prototypes could be shipped to Europe. At the start of World War II, the Thompson was the only submachine gun commercially available to the Allies. But the guns were expensive to make. Savage and Auto-Ornance simplified the gun inside and out and made it cheaper and faster to make. The result was the M1 and later the M1A1 Thompson. It turns out the "Blish principle of metallic adhesion" didn't really matter.

To learn more about the iconic Thompson M1A1 Submachine Gun, watch this "I Have This Old Gun" segment from a recent episode of American Rifleman TV.

Latest

magazines with ammo
magazines with ammo

Old (Un)reliable: Finding a Magazine that Works for Your 1911

There have been more than 100 manufacturers of 1911-style pistols and magazines, some more faithful to the original drawings than others.

3 New Shotgun Suppressors for 2026

Just because you're in the field hunting for upland game or busting clays at your local range doesn't mean you can't protect your hearing.

First Breach Begins Trading on NASDAQ Under "FBDT" Ticker Symbol

In August 2026, First Breach Defense Technologies, a producer of ammunition and unmanned aerial systems based in Hagerstown, Md., announced that its common stock had begun trading on the NASDAQ capital market under the ticker symbol "FBDT."

Review: Franchi Momentum Elite MULE

Franchi’s Momentum Elite MULE is a not-quite-a-scout rifle that has a lot to offer the modern rifle shooter.

The Armed Citizen® Aug. 24, 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.

I Have This Old Gun: Smith & Wesson K-22 Masterpiece

Smith & Wesson's rimfire K-22 Masterpiece revolver proved that quality costs, but it also sells.

Interests



Get the best of American Rifleman delivered to your inbox.