Rifleman Q&A: U.S. 'Trench Gun' Finishes

by
posted on December 9, 2022
** 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. **
Trench Gun

Q. I’ve been looking to buy an all-original World War II Winchester trench shotgun. I’ve been offered a Parkerized Model 12 stamped “U.S.”, and it has the Ordnance Corps bomb on it. All of the other all-original guns that I have examined were blued. Were any World War II U.S. military shotguns originally Parkerized?


A. With one exception, all shotguns procured by the U.S. military during or prior to World War II were originally blued. The sole exception are some very late production Winchester Model 12 “trench guns” that were factory Parkerized. These can be identified by the serial number (above approximately No. 1,030,000) and the rough, unpolished metal on the receiver. However, the factory Parkerized Model 12 trench guns will evidence some blued parts including pins, screws, triggers and slide-action bars.

closeup shotgun receiver metal finish coloring

While all other World War II-vintage military shotguns were originally blued, the quality of the bluing and metal polishing preparation sometimes showed evidence of hasty wartime manufacture that often resulted in a dull or brushed-blue finish.

Most U.S. military arms, including shotguns, were rebuilt after the war, and this procedure generally required that the formerly blued guns be refinished by Parkerizing. Due to the widespread post-war overhaul programs, the majority of World War II military shotguns observed today are Parkerized, but with the one exception noted above, such guns have been refinished.

—Bruce N. Canfield


This “Questions & Answers” was featured in the February 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, Evan P. Marshall, Charles E. Petty, Robert B. Pomeranz, O.D., Jon R. Sundra, Jim Supica, A.W.F. Taylerson, John M. Taylor and John W. 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.