Rifleman Q&A: M1 Carbine Barrel Makers

by
posted on February 24, 2023
** 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. **
HMC Receiver Markings

Q. I have a G.I. M1 carbine marked “Quality H.M.C.” on the receiver, but the barrel is marked “Rock-Ola”. Does this mean that the barrel has been replaced on this carbine?


A. Not necessarily. Of the 10 original primary contractors, only six manufactured their own barrels. The other four used barrels supplied by other prime contractors or by subcontractors. The primary contractors that manufactured their own barrels were Inland, Winchester, Rock-Ola, Underwood, Saginaw and IBM. The maker of your carbine, Quality Hardware Machine Corporation, used a number of barrels procured from Rock-Ola, along with some acquired from other sources, thus it is certainly possible that your carbine retains its original barrel.

—Bruce N. Canfield


This “Questions & Answers” was featured in the April 2007 issue of American Rifleman. At time of publication, "Questions & Answers" was compiled by Staff, Ballistics Editor William C. Davis, Jr., and Contributing Editors: David Andrews, Hugh C. Birnbaum, Bruce N. Canfield, O. Reid Coffield, Charles Q. Cutshaw, Charles M. Fagg, Angus Laidlaw, Harry Hunter, Chuck Karwan, Charles E. Petty, Robert B. Pomeranz, O.D., Jon R. Sundra, Jim Supica, John M. Taylor and John Treakle. 

To subscribe to the magazine, visit the NRA membership page and select American Rifleman as your member magazine.

Latest

Aiming
Aiming

The Fire Control Sequence: 3 Steps to Perfect Round Placement

If you want to hit your target, you need three things: a gun, a target and a method by which to hit that target with that gun. Shooting well is the result of a specific process.

Why Does the .44 Special Keep Hanging On?

What is it about the .44 Special cartridge that makes it, well, special?

CAA USA Under New Ownership, Consolidation of Manufacturing

CAA USA has been acquired by Plastimold Products, owners of META Tactical, unifying all three brands and their manufacturing capabilities.

A "Shot Heard 'Round the World" Rings Out in Karnes County

As America celebrates its 250th anniversary, communities across the nation are reflecting on the people and principles that have preserved our freedoms for generations. On Saturday, June 27, the Karnes County Friends of NRA did exactly that.

Behind Winchester's New Supreme Long Range Ammunition

For 2026, Winchester Ammunition took a big step forward in its ammo offerings with Supreme Long Range. Unlike previous offerings from the company, this purpose-built long-range hunting and shooting line required the company to invest in an entirely new projectile design: the BC Max bullet.

New For 2026: Magnum Research Suppressor-Ready Desert Eagle .50

With the growing popularity of suppressors, Magnum Research is bringing its iconic .50-caliber Desert Eagle pistol up to date with a suppressor-ready, threaded-barrel version.

Interests



Get the best of American Rifleman delivered to your inbox.