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

LCP Max Magpul 01
LCP Max Magpul 01

The LCP Meets Magpul: Ruger's LCP Max with Magpul's EHG

Over the years, Ruger has enhanced its LCP with the introduction of the LCP II and LCP Max. New for 2026, Ruger is offering a new version of the LCP Max with the addition of a Magpul Enhanced Handgun Grip.

Review: 945 Industries Q.A.P. Series Off-Body Carry Bag

Off-body carry can be somewhat controversial, but choosing the right gear can go a long way toward successful carry. One good option is the Q.A.P. Series of bags from 945 Industries.

At 75, CCI is Offering Even More

In 2026, CCI Ammunition—formally Cascade Cartridge, Inc.—marks its 75th anniversary with a fitting tribute to innovation and American ingenuity.

Gun of the Week: Powder River Precision Rubicon Icon

Powder River Precision has taken the basic Ruger 10/22 rifle concept and enhanced it with its Rubicon Icon design.

The Armed Citizen® May 1, 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.

Training & Gear for Active Shooter Response

For armed civilians, developing an active-shooter response plan isn’t about playing hero. It’s about having the right gear and the skills to decisively use them if violence finds you.

Interests



Get the best of American Rifleman delivered to your inbox.