Ammunition and magazine laws in Delaware

(a) A person is guilty of unlawfully dealing with a dangerous weapon when:
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(4) The person sells, gives or otherwise transfers to a person under 21 years of age a firearm or ammunition for a firearm, unless permitted by § 1448 of this title.

For purposes of this section and §§ 1469 and 1469A of this title:
(1) “Ammunition feeding device” means any magazine, belt, drum, feed strip, or similar device that holds ammunition for a firearm.
(2) a. “Large-capacity magazine” means any ammunition feeding device capable of accepting, or that can readily be converted to hold, more than 17 rounds of ammunition.
b. “Large-capacity magazine” does not include an attached tubular device designed to accept, and only capable of operating with, .22 caliber rimfire ammunition.
c. For purposes of this subsection, the presence of a removable floor plate in an ammunition feeding device that is not capable of accepting more than 17 rounds of ammunition shall not, without more, be sufficient evidence that the ammunition feeding device can readily be converted to hold more than 17 rounds of ammunition.
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(5) The Superior Court has exclusive jurisdiction over violations under subsections (b)(2) and (b)(3) of this section.
(c) This section does not apply to any of the following:
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(7) A large-capacity magazine that a person has rendered permanently inoperable or has permanently modified to accept 17 rounds of ammunition or less.
(d) [Repealed.]
(e) This section does not apply to any of the following:
(1) A person who manufactures a large-capacity magazine, if the person manufactures the large-capacity magazine with the intent to sell the large-capacity magazine, or offer the large-capacity magazine for sale, to a person outside of this State.
(2) A person who ships or transports a large-capacity magazine for a person under paragraph (e)(1) of this section.
83 Del. Laws, c. 331,
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83 Del. Laws, c. 331,
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(x)(1) It shall be unlawful for a person to sell, deliver, or otherwise transfer to a person who the transferor knows or has reasonable cause to believe is a juvenile—
(A) a handgun; or
(B) ammunition that is suitable for use only in a handgun.
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(5) For purposes of this subsection, the term "juvenile" means a person who is less than 18 years of age.

Small Arms Ammunition: Ammunition is classified as a Division 1.1, 1.2, 1.3, or 1.4 explosive, depending on the degree of hazard. Ammunition that is regulated as a Class 1 explosive and designed to be fired from a pistol, revolver, rifle, or shotgun, as well as associated primers and blank cartridges (including those designed for tools) and propellant powder for use in any firearm, is prohibited from mailing.
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Shotgun Hulls, Empty Casings, Nonmetallic Shotgun Hulls, or Casings Without Primers: These articles are not classified as explosives or hazardous materials under 49 CFR and, therefore, are mailable, subject to the applicable mailing rules (refer to 224).