[Code of Federal Regulations]
[Title 22, Volume 1, Parts 1 to 299]
[Revised as of April 1, 1999]
From the U.S. Government Printing Office via GPO Access
[CITE: 22CFR121.9]

[Page 342-343]
 
                       TITLE 22--FOREIGN RELATIONS
 
                     CHAPTER I--DEPARTMENT OF STATE
 
PART 121--THE UNITED STATES MUNITIONS LIST--Table of Contents
 
Sec. 121.9  Firearms.

    (a) Category I includes revolvers, pistols, rifles, carbines, fully 
automatic rifles, submachine guns, machine pistols and machine guns to 
caliber .50, inclusive. It includes combat shotguns. It excludes other 
shotguns with barrels 18inch; or longer, BB, pellet, and muzzle loading 
(black powder) firearms.
    (b) A firearm is a weapon not over .50 caliber which is designed to 
expel a projectile by the action of an explosive or which may be readily 
converted to do so.
    (c) A rifle is a shoulder firearm which can discharge a bullet 
through a rifled barrel 16 inches or longer.

[[Page 343]]

    (d) A carbine is a lightweight shoulder firearm with a barrel under 
16 inches in length.
    (e) A pistol is a hand-operated firearm having a chamber integral 
with or permanently aligned with the bore.
    (f) A revolver is a hand-operated firearm with a revolving cylinder 
containing chambers for individual cartridges.
    (g) A submachine gun, ``machine pistol'' or ``machine gun'' is a 
firearm originally designed to fire, or capable of being fired, fully 
automatically by a single pull of the trigger.