Pen gun

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

A Pen gun is a disguised 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 or tear gas cartridges.^[1][6]

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

References

1. 1 2 3 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. 1 2 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. 1 2 "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.