Found this by dz on The Firing Line. Looks to have it all covered.
ARMOR PIERCING AMMUNITION
under Title 18, UNITED STATES CODE, CHAPTER 44 as
amended by Public Law 103-322
The Violent Crime and Law Enforcement
Act of 1994
(enacted September 13, 1994)
18 U.S.C. CHAPTER 44
§ 921(a)(17)(B) the term 'armor piercing
ammunition' means --
(i) a projectile or projectile core which may be used in a
handgun and which is constructed entirely (excluding the
presence of traces of other substances) from one or a
combination of tungsten alloys, steel, iron, brass, bronze,
beryllium copper, or depleted uranium; or
(ii) a full jacketed projectile larger than .22 caliber designed and intended for use in a
handgun and whose jacket has a weight of more than 25 percent of the total weight of
the projectile.
(C) The term 'armor piercing ammunition' does not include shotgun shot required by
Federal or State environmental or game regulations for hunting purposes, a frangible
projectile designed for target shooting, a projectile which the Secretary finds is primarily
intended to be used for sporting purposes, or any other projectile or projectile core which
the Secretary finds is intended to be used for industrial purposes, including a charge
used in an oil and gas well perforating device.
§ 922(a) It shall be unlawful --
(7) for any person to manufacture or import armor piercing
ammunition, except that this paragraph shall not apply to --
(A) the manufacture or importation of such
ammunition for the use of the United States or any
department or agency thereof or any State or any
department, agency, or political subdivision thereof;
(B) the manufacture of such ammunition for the
purpose of exportation; and
(C) any manufacture or importation for the purpose of
testing or experimentation authorized by the
Secretary; and
(8) for any manufacturer or importer to sell or deliver armor piercing
ammunition, except that this paragraph shall not apply to --
(A) the sale or delivery by a manufacturer or importer
of such ammunition for the use of the United States
or any department or agency thereof or any State or
any department agency, or political subdivision
thereof;
(B) the sale or delivery by a manufacturer or importer
of such ammunition for the purpose of exportation;
(C) the sale or delivery by a manufacturer or importer
of such ammunition for the purposes of testing or
experimenting authorized by the Secretary.
(b) It shall be unlawful for any licensed importer, licensed manufacturer, licensed dealer,
or licensed collector to sell or deliver--
(5) any firearm or armor-piercing ammunition to any person unless
the licensee notes in his records, required to be kept pursuant to
section 923 of this chapter, the name, age, and place of residence of
such person if the person is an individual, or the identity and principal
and local places of business of such person if the person is a
corporation or other business entity.
§ 923 (a) No person shall engage in the business of importing, manufacturing, or
dealing in firearms, or importing or manufacturing ammunition until he has filed an
application with and received a license to do so from the Secretary... Each applicant
shall pay a fee for obtaining such a license to do so from the Secretary... Each applicant
shall pay a fee for obtaining such a license, a separate fee being required for each
place in which the applicant is to do business, as follows:
(1) If the applicant is a manufacturer-
(A) of destructive devices, ammunition for destructive
devices or armor piercing ammunition, a fee of
$1,000 per year;
(2) If the applicant is an importer-
(A) of destructive devices, ammunition for destructive
devices or armor piercing ammunition, a fee of
$1,000 per year.
(e) ...The Secretary may, after notice and opportunity for hearing, revoke the license of a
dealer who willfully transfers armor piercing ammunition...
(k) Licensed importers and licensed manufactures shall mark all armor piecing
projectiles and packages containing such projectiles for distribution in the manner
prescribed by the Secretary by regulation. The Secretary shall furnish information to
each dealer licensed under this chapter defining which projectiles are considered armor
piercing ammunition as defined by section 921(a)(17)(B).
§ 929(a)(1) Whoever, during and in relation to the commission of a crime of
violence or drug trafficking crime (including a crime of violence or drug trafficking crime
which provides for an enhanced punishment if committed by the use of a deadly or
dangerous weapon or device) for which he may be prosecuted in a court of the United
States, uses or carries a firearm and is in possession of armor piercing ammunition
capable of being fired in that firearm, shall in addition to the punishment provided for the
commission of such crime of violence or drug trafficking crime, be sentenced to a term of
imprisonment for not less than five years.
(b) Not withstanding any other provision of law, the court shall not suspend the sentence
of any person convicted of a violation of this section, nor place the person on probation,
nor shall the terms of imprisonment run concurrently with any other terms of
imprisonment, including that imposed for the crime in which the armor piercing
ammunition was used or possessed. No person sentenced under this section shall be
eligible for parole during the term of impressment imposed herein. LIST OF ARMOR
PIERCING AMMUNITION
KTW AMMUNITION, all calibers. (Identified by a green coating on the projectile)
ARCANE AMMUNITION, all calibers. (Identified by a pointed bronze or brass projectile)
THV AMMUNITION, all calibers. (Identified by a brass or bronze projectile and having a
headstamp containing the letters SFM and THV)
CZECHOSLOVAKIAN manufactured 9mm Parabellum (Luger) ammunition having an iron
or steel core. (Identified by a cupronickel jacket and headstamp containing a triangle,
star and dates 49, 50, 51, or 52. The bullet is attracted to a magnet)
GERMAN manufactured 9mm Parabellum (Luger) having an iron or steel bullet core.
(Original packaging is marked Pisolenpatronen 08 m.E. May have black colored bullet.
This bullet is attracted to a magnet)
MSC AMMUNITION, Caliber .25. (Identified by a hollow point brass bullet. NOTE: MSC
ammunition Caliber .25 identified by a hollow point copper bullet is not armor piercing)
BLACK STEEL ARMOR PIERCING AMMUNITION, All Calibers, as produced by National
Cartridge, Atlanta, Georgia.
BLACK STEEL METAL PIERCING AMMUNITION, All Calibers, as produced by National
Cartridge, Atlanta, Georgia.
7.62mm NATO AP (Identified by black coloring in the bullet tip. This ammunition is used
by various NATO countries. The U.S. military designation is M61 AP)
7.62mm NATO SLAP (identified by projectile having a plastic sabot around a hard
penetrator. The penetrator protrudes above the sabot and is similar in appearance to a
Remington accelerator cartridge)
PMC ULTRAMAG .38 Special caliber, constructed entirely of a brass type material, and
plastic pusher disc located at the base of the projectile. NOTE: PMC ULTRAMAG 38J
late production made of copper with lead alloy projectile is not armor piercing.
OMNISHOCK, a .38 Special cartridge with a lead bullet containing a mild steel core with
a flattened head resembling a wad cutter. (NOTE: OMNISHOCK cartridges having a
bullet with an aluminum core are not armor piercing.)
7.62x39mm with steel core. (NOTE: these projectiles have a steel core. Projectiles
having a lead core with steel jacket or steel case are not armor piercing)
NOTE: THE FOLLOWING CARTRIDGES HAVE BEEN REMOVED FROM THE
DEFINITION OF ARMOR PIERCING AMMUNITION:
5.56MM (.223) SS109 and M855 Ammunition, Identified by a green coating on the
projectile tip.
U.S. .30-06 M2 AP, Identified by a black coating on the projectile tip.