; (ii) the possession by an employee or contractor of a licensee under title I of the Atomic Energy Act of 1954 on-site for purposes of establishing and maintaining an on-site physical protection system and security organization required by Federal law, or off-site for purposes of licensee-authorized training or transportation of nuclear materials; (iii) the manufacture or possession by a licensed manufacturer or licensed importer for the purposes of testing or experimentation authorized by the Attorney General; or (iv) the manufacture for, or possession by, an organization that provides firearm training and that is registered with the Attorney General, or the possession by an individual to whom such an organization is providing firearm training during and at the location of the training. . (b) Large capacity ammunition feeding device defined Section 921(a) of such title, as amended by section 1 of this Act, is amended by inserting after paragraph (30) the following: (31) The term large capacity ammunition feeding device means a magazine, belt, drum, feed strip, or similar device that has a capacity of, or that can be readily restored or converted to accept, more than 10 rounds of ammunition, but does not include an attached tubular device designed to accept, and capable of operating only with, .22 caliber rimfire ammunition. . (c) Penalties Section 924(a) of such title, as amended by section 2 of this Act, is amended by adding at the end the following: (11) (A) Whoever knowingly violates section 922(dd)(1) shall be fined not less than $50,000 and not more than $100,000, imprisoned not less than 10 years and not more than 20 years, or both. (B) Whoever knowingly violates section 922(dd)(2) shall be fined not less than $10,000 and not more than $25,000, imprisoned not less than 1 year and not more than 5 years, or both. .