Delaware Ghost Gun & Unserialized Firearm Laws
A practical guide to Delaware laws governing untraceable firearms, unfinished frames and receivers, privately made firearms, serialization, removed serial numbers and 3D-printed firearms — including the 2026 compliance process created by House Bill 418.
Updated November 5, 2026
Unfinished frames: § 1459A
Altered serial numbers: § 1459
2026 update: HB 418 / 85 Del. Laws, c. 469
Federal court permanently blocks enforcement of several Delaware ghost-gun restrictions
On September 10, 2026, the U.S. District Court for the District of Delaware ruled in Rigby v. Jennings that several portions of Delaware’s 2021 untraceable-firearm law violate the Second Amendment, and entered a permanent injunction against enforcing its bans on possession of unfinished unserialized frames or receivers (§ 1459A(b)), possession of untraceable firearms (§ 1463(a)), certain personal manufacture and assembly (§ 1463(b)), and use of 3D printers for manufacture (§ 1463(c)(1)).
Other provisions were not enjoined, including the distribution restrictions on unmarked unfinished frames/receivers (§ 1459A(a)), selling or transferring untraceable firearms (§ 1463(b)), and distribution of certain 3D-printing instruction files (§ 1463(c)(2)). The Court’s injunction is specific to the listed provisions; it does not invalidate all Delaware or federal firearm laws.
The case remains in post-judgment proceedings. The State filed a motion to alter or amend the judgment on October 8, and on October 13 the Third Circuit paused the appeal pending a district-court ruling. The 2026 HB 418 compliance provisions remain in the Delaware Code, but their application must be assessed alongside the injunction and any subsequent orders.
Delaware created a compliance path for certain previously possessed unserialized firearms
House Bill 418 was signed on September 3, 2026 and took effect immediately. The law preserves Delaware’s prohibition on untraceable firearms while creating a way for certain people who lawfully possessed an unserialized firearm or unfinished frame or receiver before the law’s effective date — or who later move into Delaware with one lawfully acquired elsewhere — to bring the item into compliance.
Important litigation qualification: On September 10, 2026, a federal court permanently enjoined enforcement of key possession and personal manufacture provisions. Read the federal court update above before assuming all underlying criminal prohibitions can currently be enforced.
A qualifying person must generally act within 6 months by either having the firearm or unfinished frame or receiver properly serialized by a federally licensed firearm dealer or manufacturer, or by rendering it permanently inoperable as defined by Delaware law.
Key date for qualifying existing Delaware residents: March 3, 2027
For a qualifying existing Delaware resident, HB 418 sets a six-month statutory date of March 3, 2027. However, the September 10, 2026 federal injunction prohibits enforcement of key possession restrictions; the practical consequences of this compliance date must be evaluated with the current court orders. New residents have a separate timing rule.
Not every firearm without a visible serial number is treated the same
Delaware uses several separate statutes. An untraceable firearm, an unfinished frame or receiver, and a firearm whose original serial number was removed or altered can fall under different provisions.
Untraceable Firearm
The Delaware Code contains possession, manufacture and transfer prohibitions; a September 2026 federal injunction blocks enforcement of specified possession and personal manufacture provisions.
Unfinished Frame or Receiver
Delaware separately regulates unfinished firearm frames and receivers that lack the required manufacturer information and serial number.
Removed or Altered Serial Number
A firearm that originally had an importer or manufacturer serial number that was removed, obliterated or altered is governed by a separate felony statute.
What is an “untraceable firearm” in Delaware?
Delaware law defines an untraceable firearm as a firearm for which the sale or distribution chain from a licensed retailer to the point of its first retail sale cannot be traced by law-enforcement officials.
The term “ghost gun” is commonly used in public discussion, but Delaware’s criminal statutes use more specific terms such as untraceable firearm and unfinished firearm frame or receiver.
A firearm without a modern serial number is not automatically an “untraceable firearm.” Delaware’s statutory definition excludes certain older firearms, muzzle-loading firearms and qualifying replicas of antique firearms.
What does Delaware prohibit?
Delaware Code §§ 1459A and 1463 contain prohibitions concerning possession, manufacture, sale and transfer of certain unserialized firearms and components. However, the September 10, 2026 permanent injunction in Rigby v. Jennings currently bars enforcement of the specified possession and personal manufacture provisions. Restrictions on certain sales, transfers and distribution remain outside that injunction.
The published § 1463 text classifies knowing possession of an untraceable firearm as a class E felony under the statutory text; enforcement of the possession provision is presently enjoined. Manufacturing offenses have distinct penalties.
How can a qualifying previously possessed unserialized firearm be brought into compliance?
HB 418 created a limited compliance process for a person who lawfully possessed an unserialized firearm before September 3, 2026, or who lawfully acquired the firearm in another jurisdiction and later established Delaware residency.
Have it properly serialized
A federally licensed firearm dealer or federally licensed firearm manufacturer may imprint the required serial number in accordance with federal law and applicable marking requirements.
Render it permanently inoperable
The firearm or unfinished frame or receiver may instead be permanently disabled in the manner recognized by Delaware law. Simply removing parts, disassembling it or temporarily disabling it is not enough.
The compliance provision is not a general amnesty for every unserialized firearm
The statutory language applies to a person who meets the specific lawful-possession or lawful-acquisition criteria. It should not be read as authorizing new private manufacture of unserialized firearms after September 3, 2026, or as curing a firearm whose original manufacturer or importer serial number was unlawfully removed or altered.
What happens when an FFL serializes the firearm?
HB 418 allows a federally licensed firearm dealer or federally licensed firearm manufacturer to serialize a qualifying firearm or unfinished frame or receiver. The marking must comply with federal serialization requirements, including applicable minimum size and depth standards, and the licensee must maintain the required records.
The statute expressly provides that a temporary transfer solely for the purpose of lawful serialization is not itself unlawful possession, manufacture or transfer under the covered provisions.
Returning the newly serialized firearm or unfinished frame or receiver to the owner is treated as a transfer and is subject to a background check under 11 Del. C. § 1448A.
If the person cannot lawfully receive the newly serialized item following the required background check, the statute directs the licensee to surrender the item to law enforcement.
The law authorizes qualified federal licensees to perform serialization, but it does not require every dealer to offer the service. Confirm that the licensee provides serialization services and will accept the particular firearm or frame before transporting it to the business.
What does “permanently inoperable” mean?
HB 418 added a specific definition. The firearm must be incapable of discharging a projectile by means of an explosive and incapable of being readily restored to a functional state. Cosmetic damage, partial disassembly, removal of parts or temporary disabling does not qualify.
The alteration must be irreversible and not susceptible to restoration through ordinary tools or commonly available equipment. The law identifies methods such as permanently altering the frame or receiver so it cannot accept fire-control components, permanently welding or obstructing the barrel, or destroying the frame or receiver in a manner consistent with applicable federal firearm-destruction standards.
A firearm that can readily be restored by reinstalling components does not satisfy the statutory permanent-inoperability standard.
Delaware law on unfinished firearm frames and receivers
Delaware defines an unfinished firearm frame or receiver as a frame or receiver that requires further machining or molding before it can be used as part of a functional firearm and that is designed and intended for use in assembling a functional firearm.
The text of § 1459A addresses possession and distribution of unfinished frames or receivers lacking required markings. But the federal court permanently enjoined enforcement of the possession provision, § 1459A(b). Separate restrictions on transport, shipment, transfer and sale under § 1459A(a) were not enjoined. The statute assigns the possession offense a
A person who meets the 2026 law’s lawful-possession or new-resident criteria may retain the unfinished frame or receiver only by complying within the statutory six-month period through serialization or permanent inoperability.
What if a firearm’s original serial number was removed or altered?
That is a different issue from a firearm that was originally made without a serial number. Section 1459 prohibits knowingly transporting, shipping, possessing or receiving a firearm or firearm frame or receiver when the person knows the importer or manufacturer serial number was removed, obliterated or altered in a way that disguised or concealed the firearm’s identity or origin.
A violation of § 1459 is a class D felony. The section contains an exception for a firearm manufactured prior to 1973.
The 2026 serialization process should not be assumed to legalize possession of a firearm whose original manufacturer or importer serial number was intentionally removed, obliterated or altered.
Does Delaware regulate 3D-printed firearms?
Section 1463 contains 3D-printing restrictions, but Rigby v. Jennings permanently enjoined enforcement of § 1463(c)(1), the provision regulating unlicensed 3D-printing manufacture. Restrictions involving distribution of digital instruction files under § 1463(c)(2) were not enjoined.
The statute also addresses distribution of digital files or other electronic instructions capable of programming a 3D printer to manufacture a firearm, receiver or major firearm component to a person who is not licensed as a manufacturer.
Manufacturing or prohibited distribution involving a 3D printer under § 1463 is classified as a class D felony.
What firearms are excluded from Delaware’s “untraceable firearm” definition?
The statutory definition of “untraceable firearm” excludes the following categories:
A qualifying firearm manufactured prior to 1968 is excluded from the statutory definition of an untraceable firearm.
Muzzle-loading firearms designed to use black powder or its equivalent are excluded.
Firearms designed as replicas of antique firearms originally manufactured prior to 1898 are also excluded from the definition.
Do not confuse the pre-1968 exclusion in the “untraceable firearm” definition with the separate pre-1973 exception in Delaware’s removed-or-altered-serial-number statute.
What if I move to Delaware with a privately made or unserialized firearm?
HB 418 expressly addresses a person who lawfully acquired an unserialized firearm or unfinished frame or receiver in another jurisdiction and later establishes residency in Delaware.
A person who qualifies must bring the item into compliance within 6 months after establishing Delaware residency or within 6 months after September 3, 2026, whichever is later.
The new-resident provision is tied to lawful acquisition in another jurisdiction. Moving an item across state lines does not erase federal law, the law of the state where it was acquired, or other Delaware firearm restrictions.
Before taking an unserialized firearm to a dealer
Do not assume that every Federal Firearms Licensee offers serialization or will accept every unserialized firearm or unfinished frame or receiver. Contact the dealer first and describe the item accurately.
Dealers must also comply with federal marking, acquisition-and-disposition recordkeeping, transfer and background-check requirements. A person should not attempt to add a homemade serial number and assume that doing so satisfies Delaware’s statutory process.
Frequently asked questions
Did the September 2026 federal ruling legalize all ghost guns in Delaware?
No. The court permanently enjoined enforcement of particular possession and manufacture restrictions, but left other distribution and digital-file restrictions undisturbed. HB 418, other Delaware laws and federal law must also be considered. Proceedings are ongoing.
Are ghost guns legal in Delaware?
The federal court permanently enjoined enforcement of particular Delaware bans on possession and personal manufacture in September 2026. Other restrictions remain, including limits on certain transfers and distribution. Legality depends on the specific firearm, activity, court orders and federal law.
Can I simply engrave my own serial number on an unserialized firearm?
Not for purposes of the HB 418 compliance pathway. The statute calls for serialization by a federally licensed firearm dealer or federally licensed firearm manufacturer in accordance with federal marking and recordkeeping requirements.
Is there a deadline to serialize a qualifying firearm?
HB 418 provides a statutory six-month period, generally ending March 3, 2027 for qualifying existing Delaware residents, with a later-of rule for qualifying new residents. However, a federal injunction now restricts enforcement of several underlying possession provisions. Confirm the current court status before assuming a deadline is enforceable in any particular situation.
Does an FFL have to run a background check when returning the serialized firearm?
Yes. HB 418 states that return of the newly serialized firearm or unfinished frame or receiver constitutes a transfer subject to a background check under 11 Del. C. § 1448A.
Does removing the firing pin make the firearm permanently inoperable?
No. Delaware’s 2026 definition requires an irreversible alteration that cannot readily be restored with ordinary tools or commonly available equipment. Partial disassembly or simply removing components does not satisfy the definition.
What if the factory serial number was scratched off or ground away?
That situation is governed by the separate removed-or-altered-serial-number statute, 11 Del. C. § 1459. It should not be treated as the same thing as a privately made firearm that never had a manufacturer or importer serial number.
Are old firearms without serial numbers automatically illegal?
No. Delaware’s “untraceable firearm” definition specifically excludes firearms manufactured prior to 1968, certain muzzle-loading firearms and qualifying replicas of antique firearms. Other laws can still apply.
Can I manufacture a new unserialized firearm for personal use in Delaware?
The September 10, 2026 federal injunction bars enforcement of certain Delaware personal manufacture and 3D-printing restrictions. It does not remove all other state or federal restrictions. The legal status should be evaluated against the court order, HB 418 and current federal requirements.
Official sources
Delaware House Bill 418 — 2026 amendments to Delaware’s unserialized-firearm laws; signed September 3, 2026
11 Del. C. § 222 — Definitions, including untraceable firearm and unfinished firearm frame or receiver
11 Del. C. §§ 1459, 1459A & 1463 — Altered serial numbers, unfinished frames/receivers and untraceable firearms
ATF Firearms Resources — Federal firearm marking, recordkeeping and licensing information
U.S. District Court — Rigby v. Jennings (September 10, 2026) — Opinion addressing permanent injunction of possession and manufacture prohibitions
Legal information, not legal advice.
DelawareGunLaws.com is an independent educational resource and is not affiliated with the State of Delaware or any government agency. Ghost-gun and unserialized-firearm laws can involve overlapping Delaware and federal requirements, and the legality of a particular firearm can depend on when and how it was made, acquired, marked and possessed. Verify the current Delaware Code, session laws, federal regulations and applicable agency guidance before relying on this information.
Buying a Firearm in Delaware
Learn about Delaware purchase requirements, background checks, the Permit to Purchase system and dealer transfers.