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

Glock Gen6 V Series 1
Glock Gen6 V Series 1

Glock Unveils Its GEN6, V-Series Pistols

"Perfection" is now in its sixth generation, as Glock introduces its new GEN6 line of handguns, which incorporates substantial mechanical and ergonomic changes compared to previous factory offerings.

Tisas Introduces PX-9 2.0 Duty Comp, Carry Comp & Tactical Comp Pistols

Many handgunners are seeing the value of muzzle compensators on their handguns, and Turkish gunmaker Tisas is answering the call with three new models: the PX-9 2.0 Duty Comp, Carry Comp and Tactical Comp.

Preview: Federal BYOB .22LR Ammo Bucket

With 1,375 rounds of .22 Long Rifle ammunition, the stackable, reusable Federal BYOB .22 LR Ammo Bucket is sure to keep even the most ardent shooter of rimfire handguns or rifles busy for a while—even if there’s more than one new gun under the tree.

Gun Of The Week: CZ 600+ American

CZ expanded its 600 series of rifles with a particular version tailored to the American market, and this CZ 600+ American model has a few unique features incorporated into the design.

The Armed Citizen® Dec. 5, 2025

Read today's "The Armed Citizen" entry for real stories of law-abiding citizens, past and present, who used their firearms to save lives.

30 Years Of Bond Arms Pistols

Bond Arms, the Texas-based maker of a series of double-barrel derringers inspired by a design from the Old West, celebrates 30 years in business in 2025.

Interests



Get the best of American Rifleman delivered to your inbox.