Semi-auto or Auto

by
posted on January 11, 2012
** 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. **
wiley-clapp.jpg

A reader responded to a blog with his concerns over proper use of the terms “automatic” and “semi-automatic.” In terms of describing the type of action used in many magazine-fed firearms, automatic means continuous fire as long as the trigger is depressed and ammo is available in the gun. Semi-automatic means one shot for each trigger press and reset.

However, early literature uses automatic as describing a gun that not only fires when you press the trigger, but also reloads its own chamber. It came into common parlance in that sense around the time when we needed to differentiate between handguns with cylinders and those with magazines.

I see no reason why we shouldn't describe the Model 1911 as an automatic pistol. After all, it is chambered for the .45 ACP (Automatic Colt Pistol) cartridge, not the .45 SACP (Semi-Automatic Colt Pistol).

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.