Rifleman Q&A: Belt-Fed .30 Carbine?

by
posted on November 6, 2015
** 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. **
belt.jpg

Q: I have a question about the .30 M1 Carbine cartridge. I have a friend who was stationed at Dutch Harbor with the Navy in the 1970s, and he said he had a belt that had .30 Carbine cartridges in it and his job was to take them out of the belt. I don’t know if the belt was cloth or metal. I was at a cartridge show and picked up a .30 Carbine cartridge that was pointed like a .30-cal. rifle cartridge. It had a “45” stamp on it, and it was made from steel. It was too long to fit in the M1 carbine magazine. Did the military ever experiment with a light machine gun using the .30 Carbine cartridge? 

A: Thanks for your recent letter. There is absolutely no evidence that the American military did any experimentation with a belt-fed (or any other type) light machine gun chambered for the .30 Carbine cartridge. In any event, the .30 M1 Carbine cartridge would be much too anemic for use in a light machine gun.

I strongly suspect the carbine cartridge you saw with the pointed-tip bullet and longer-than-normal length was an “M18” high-pressure proof cartridge. These were used to “proof test” carbines at the factory and were singly loaded into the gun, thus did not feed through the magazine so the longer length was not an issue. These were made in both brass and tinned case configurations.

—Bruce Canfield

Latest

Shortage
Shortage

Suppressor Demand Outpaces Production

The demand for suppressors is setting new records. National Firearm Act (NFA) item purchases in September—primarily suppressors—more than doubled compared to the same month in 2025.

Book Review | Five Decades of a Fabulous Firearm: Celebrating the 50th Anniversary of the Beretta 92 Pistol Series

In this wide-ranging book, you’ll find a history of Beretta, discussion of developments leading to the Model 1951/951 Brigadier, its evolution into the Model 92 and the U.S. military’s adoption of the platform (as the M9) in 1985.

Review: Galco Revenger Holster & SB7 Gun Belt

For those who choose to carry a finely finished, K-frame revolver, Galco offers one of its finest concealed-carry setups in the form of its Revenger holster and SB7 gun belt.

Rimfire Power: The Primary Arms CLx 1-6x24 mm Riflescope with ACSS 22LR G2 Reticle

Low-power variable optics have become popular options for today's AR-15s and other modern sporting rifles, and Primary Arms now offers an option tailored for rimfire versions of those same guns.

Gun of the Week: Walther Arms PDP F-Series Pro-X PMM

One of Walther Arms' recent introductions combines the features of several other PDP handguns, meaning the Walther PDP F-Series Pro-X PMM is packed with a number of different design elements.

The Armed Citizen® Oct. 30, 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.