A bill to amend chapter 44 (relating to firearms) of title 18 of the United States Code to exclude pen guns from the definition of firearms used for the purposes of that chapter.

Redefines, for purposes of Federal criminal law, the term "firearm" to exclude any device which is intended only to fire a defensive gas, or a pyrotechnic signal, or both, and which does not have a separated chambered barrel capable of firing a fixed round of ammunition. (Amends 18 U.S.C. 921(a)(3))