Autry National Center

Cutaway Model 1855 Sidehammer Pocket Revolver

right side

right side

1856; serial number 6475
Manufacturer: Colt's Patent Fire Arms Manufacturing Company

The most extensively cutaway Colt percussion revolver is this Model 1855 Sidehammer Pocket. Cutaway, or skeleton, arms were used to demonstrate the mechanics and special features found on Colt firearms. Serial number 6475 is superbly machined to reveal the inner workings of the barrel, rammer, barrel lug, frame, cylinder, and grips. The chambers in the cylinder received special attention. One chamber is slightly machined, another is machined approximately in half, and two other chambers are cut into entirely. Despite its impressive design, the Sidehammer was the least successful model introduced by Colt’s Patent Fire Arms Manufacturing Company during Samuel Colt’s lifetime.

  • left side

    left side
  • cylinder detail, left side

    cylinder detail, left side
  • cylinder detail, right side

    cylinder detail, right side


Jeffrey Richardson
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Marilyn Kim, Vlasta Radan, Carmel France, Rebecca Menendez, David Benitez, Susan Eisenstein


Marlene Head

Special Thanks

Greg Martin, R. L. Wilson

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