Rifleman Q&A: Needham Conversion

by
posted on July 22, 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. **
Needhamconversion

Q. About 20 years ago I bought a Springfield rifle, and at that time I was told that it had an Allin conversion. Recently I watched a television segment on guns that showed a Springfield rifle with an Allin conversion, but that gun opened to the top, whereas mine opens to the side as the picture shows. Is my gun an Allin conversion or does it have a different name?


A. You do not have an “Allin Conversion.” Your rifle appears to be one of the Needham Conversions of an M1861/M1863 Civil War Springfield rifle-musket. These guns were converted by the firm of J&G Needham of Trenton, N.J., circa 1869, and are chambered for a .58-cal. center-fire cartridge. The number of rifles converted to the Needham pattern is not known but estimates range as high as 4,000 to 5,000. The Needham guns were not standardized or utilized by the U.S. military, but a few state militia units reportedly purchased some in the early 1870s.

The Needham Conversion is characterized by the side-hinging breechblock as opposed to the Allin Conversion’s top-mounted “trapdoor” breechblock. The Needham offered no real advantages over the standardized Allin action and was presumably developed as an attempt to circumvent the Allin patent.

—Bruce N. Canfield


This “Questions & Answers” was featured in the February 2005 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, Charles Karwan, 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 Treakle.

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

Latest

Mendoza RM22 01
Mendoza RM22 01

Hecho en México: The Mendoza RM22 Rifles

Mendoza Firearms claims that its RM22 rimfire rifle is the first indigenously produced rifle to be exported to the United States.

Preview: MGE 1911 Grips

Mammoth Grip Exchange is a small startup company that specializes in crafting replacement stock sets for M1911-pattern pistols in a dizzying assortment of exotic materials...

Gun Of The Week: Mossberg 990 Aftershock

For this Gun Of The Week episode, American Rifleman staffers hit the range with the Mossberg 990 Aftershock, a non-NFA, shotshell-firing firearm that provides plenty of power in a compact package.

The Armed Citizen® Nov. 14, 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.

Christensen Arms Evoke: A Budget-Friendly Hunting Rifle Built For The Field

For hunters seeking a well-built, no-frills hunting rifle, the Christensen Arms Evoke offers a host of desirable features, all at a price that leaves room for hunting tags and travel costs.

Wholesale Change in Glock Lineup & Other Industry Moves

Fall 2025 has proven to be a volatile time within the firearm industry, with companies like Glock announcing major changes to its product lineup, while other companies announce expansions and moves.

Interests



Get the best of American Rifleman delivered to your inbox.