The fact that a firearm is not listed in Appendix A shall not be construed to mean that paragraph (1) applies to such firearm. No firearm exempted by this subsection may be deleted from Appendix A so long as this subsection is in effect.
"(4) Paragraph (1) shall not apply to-
"(A) the manufacture for, transfer to, or possession by the United States or a department or agency of the United States or a State or a department, agency, or political subdivision of a State, or a transfer to or possession by a law enforcement officer employed by such an entity for purposes of law enforcement (whether on or off duty);
"(B) the transfer to a licensee under title I of the Atomic Energy Act of 1954 for purposes of establishing and maintaining an on-site physical protection system and security organization required by Federal law, or possession by an employee or contractor of such licensee on-site for such purposes or off-site for purposes of licensee-authorized training or
transportation of nuclear materials;
"(C) the possession, by an individual who is retired from service with a law enforcement agency and is not otherwise prohibited from receiving a firearm, of a semiautomatic assault weapon transferred to the individual by the agency upon such retirement; or
"(D) the manufacture, transfer, or possession of a semiautomatic assault weapon by a licensed manufacturer or licensed importer for the purposes of testing or experimentation authorized by the Secretary.".
(b) DEFINITION OF SEMIAUTOMATIC ASSAULT WEAPON.-Section 921(a) of title 18, United States Code, is amended by adding at the end the following new paragraph:
"(30) The term `semiautomatic assault weapon' means-
"(A) any of the firearms, or copies or duplicates of the firearms in any caliber, known as-
"(i) Norinco, Mitchell, and Poly Technologies Avtomat Kalashnikovs (all models);
"(ii) Action Arms Israeli Military Industries UZI and Galil;
"(iii) Beretta Ar70 (SC-70);
"(iv) Colt AR-15;
"(v) Fabrique National FN/FAL, FN/LAR, and FNC;
"(vi) SWD M-10, M-11, M-11/9, and M-12;
"(vii) Steyr AUG;
"(viii) INTRATEC TEC-9, TEC-DC9 and TEC-22; and
"(ix) revolving cylinder shotguns, such as (or similar to) the Street Sweeper and Striker 12;
"(B) a semiautomatic rifle that has an ability to accept a detachable magazine and has at least 2 of-
"(i) a folding or telescoping stock;
"(ii) a pistol grip that protrudes conspicuously beneath the action of the weapon;
"(iii) a bayonet mount;
"(iv) a flash suppressor or threaded barrel designed to accommodate a flash suppressor; and
"(v) a grenade launcher;
"(C) a semiautomatic pistol that has an ability to accept a detachable magazine and has at least 2 of-
"(i) an ammunition magazine that attaches to the pistol outside of the pistol grip;
"(ii) a threaded barrel capable of accepting a barrel extender, flash suppressor, forward handgrip, or silencer;