Pen gun

Homemade pen guns (Museum of the History of Donetsk militsiya).
Homemade pen guns (Museum of the History of Donetsk militsiya).

A Pen gun is a firearm that resembles an ink pen.[1][2] They generally are of small caliber (e.g., .22 LR, .25 ACP, .32 ACP, .38-caliber, etc.)[3][4] and are single shot.[3][5] Early examples of pen guns were pinfired, but modern designs are rim or centerfire.[1] Some pen guns are not designed to fire regular cartridges, but rather blank cartridges, signal flares or tear gas cartridges.[1][6]

In the United States, pen guns that can fire bullet or shot cartridges and do not require a reconfiguration to fire (e.g., folding to the shape of a pistol) are federally regulated as an Any Other Weapon (Title II). They require registration under the National Firearms Act and a tax in the amount of five dollars is levied.[6][7]


  1. ^ a b c John Minnery (1990). Fingertip Firepower: Pen Guns, Knives and Bombs. Paladin Press. pp. 33, 38. ISBN 0-87364-560-X.
  2. ^ Helias Doundoulaki (2008). I was Trained to be a Spy: A True Life Story. p. 65. ISBN 1425753795.
  3. ^ a b J. David Truby (1993). Zips, Pipes, And Pens: Arsenal Of Improvised Weapons. Paladin Press. p. 132. ISBN 0873647025.
  4. ^ "Instructions -- .25 ACP". Retrieved 2014-02-18.
  5. ^ Stephen D. Carpenteri. Gun Trader's Guide, Thirty-Fifth Edition: A Comprehensive, Fully Illustrated Guide to Modern Firearms with Current Market Values. Skyhorse Publishing. ISBN 1626360251.
  6. ^ a b "Identification of Firearms Within the Purview of the National Firearms Act". Retrieved 2014-02-18.
  7. ^ "National Firearms Act Handbook" (PDF). Retrieved 2014-02-18.

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