Homemade firearm

Short description: Firearm made by a private individual

For the manufacturing of firearms by private companies, see Engineering:Arms industry.

The examples and perspective in this article deal primarily with the United States and do not represent a worldwide view of the subject. You may improve this article, discuss the issue on the talk page, or create a new article, as appropriate. (April 2023) (Learn how and when to remove this template message)

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Receiver blanks in various stages of completion. Receiver blanks are often used in the manufacture of homemade firearms.

A homemade firearm, also called a ghost gun or privately made firearm (PMF), is a firearm made by a private individual, in contrast to one produced by a corporate or government entity.[1] The term ghost gun is used mostly in the United States, where it was coined by gun control advocates to describe the untraceability of such weapons, but has also been reappropriated by the Bureau of Alcohol, Tobacco, Firearms, and Explosives (ATF),[2] some gun rights advocates and the firearm industry.[3]

## Contents

* 1 Production
* 1.1 United States
* 1.1.1 History
* 1.2 Non-U.S. jurisdictions
* 2 Political controversy
* 2.1 Traceability
* 2.2 Advocates
* 2.3 Notable crimes
* 3 U.S. law
* 3.1 U.S. federal law
* 3.1.1 ATF enforcement and discretion
* 3.2 U.S. state laws
* 3.2.1 California
* 3.2.2 Colorado
* 3.2.3 Connecticut
* 3.2.4 Delaware
* 3.2.5 Illinois
* 3.2.6 Maryland
* 3.2.7 New Jersey
* 3.2.8 New York
* 3.2.9 Pennsylvania
* 3.3 Pending legislation
* 3.3.1 United States Congress
* 3.3.2 Massachusetts
* 3.3.3 Illinois
* 4 See also
* 5 Notes
* 6 References

## Production

### United States

Under U.S. federal law, the creation of a firearm for non-commercial purposes (i.e., personal use) has, almost without exception, been unlicensed and legal. Second Amendment scholars note unconstitutional attempts to restrict access to homemade firearms is a problem as old as the Constitution itself.[4] Since the passage of the Gun Control Act of 1968, however, anyone intending to manufacture firearms for sale or distribution is required to obtain a Federal Firearms License, and each firearm made is required to bear a unique serial number.[5][6][7]

In 2022, the Bureau of Alcohol, Tobacco, Firearms, and Explosives (ATF) issued a rule that determined "buy build shoot" kits, which the ATF claimed could be assembled into functioning firearms in as little as 20 minutes, fit within the definition of "frame or receiver" used in the Gun Control Act of 1968.[8][9] The ATF regulation, Final Rule 2021-05F, went into effect on August 24, 2022.[10] This regulation expanded upon the current terms used in the Code of Federal Regulations by addition of the following:

> "The term [firearm] shall [also] include a weapon parts kit that is designed to or may readily be completed, assembled, restored, or otherwise converted to expel a projectile by the action of an explosive."[11][lower-alpha 1]

The ATF rule thus required such kits to have serial numbers, required manufacturers of such kits to be licensed, and required commercial sellers of such kits to conduct background checks for purchasers.[8][9] Under U.S. law, the frame or receiver of a firearm is treated as though it were a firearm itself; accordingly, both are subject to similar regulations.[12]

Example of a firearm parts kit regulated by ATF Rule 2021R-05F

The rule was challenged in court by gun advocacy groups, and a U.S. district judge in Texas, Reed O'Connor, ruled in 2023 that the ATF rule exceeded the agency's authority and issued a nationwide injunction blocking the rule.[8] However, the U.S. has appealed to the Fifth Circuit,[8] and O'Connor's injunction was stayed by the U.S. Supreme Court, allowing the rule to go into effect pending further proceedings.[13]

While some states have passed laws restricting the creation of homemade firearms, in most states unfinished receivers are sold without requiring a federal or state background check.[14][15]

#### History

Most receiver blanks from the 20th century could be finished with hand tools, a drill press, or machine tools.[16][17] Certain companies in the 1990s began to sell receiver kits that could include drill bits, stencils, or jigs to aid the finishing process.[3]

Milling of the fire-control group in a receiver blank

Starting in the 2010s, polymer receiver blanks and kits became popular, which require only hand tools for finishing. Polymer80, based in Dayton, Nevada, became well known for being a top producer of such receivers.[18][19][20]

A privately made pistol with a polymer frame

It has always been possible to make firearms from raw materials, and more recently it has become popular among firearms hobbyists to produce receivers from plastic with a 3D printer, though the variety of materials and methods used to create these receivers are of varying quality.[3]

An AR-15-esque (lower) receiver blank created using a 3D printer

A popular machine tool for completing receiver blanks is a CNC mill. The company Defense Distributed sells a CNC milling machine named the Ghost Gunner for this purpose.[3][21] The Ghost Gunner was first sold in 2014, when the term "ghost gun" became popularized.[22]

AR-15-style firearms are often made as homemade firearms. AR-15s are modular firearms, and maker's marks are usually applied to the lower receiver, which houses the trigger group. A person with an AR-15 lower receiver can assemble a complete firearm using widely available, commercial and unregulated components, such as barrels, stocks, and upper receivers.[3]

A homemade firearm built in the style of the ArmaLite Rifle 15

Pistols and AK-47-style semi-automatic rifles are also popularly made as homemade firearms.[23] The Intelligence Division of the New York City Police Department has published a survey and compendium of homemade firearm types.[24]

### Non-U.S. jurisdictions

Overseas production centers of clandestine homemade firearms include China, the Khyber Pass area of Pakistan, and the Philippines;[25] the Philippines are especially known for the production of .45 caliber semi-automatic pistols.[26]

## Political controversy

### Traceability

Because they lack serial numbers and manufacturer identification,[16] homemade firearms are more difficult to trace than conventional firearms.[8][27]

To help trace homemade firearms used in crime and assist detectives in criminal investigations, ATF officials have advised law enforcement agencies to submit evidence obtained in investigations to the National Integrated Ballistic Information Network (NIBIN).[28]

In a 2021 commentary on firearms in the journal Injury Epidemiology, firearm violence expert Garen Wintemute wrote that "The potential for large-scale, clandestine firearm manufacture in support of armed extremist groups is cause for great concern."[29] Wintemute wrote that the relative inexpensiveness of 3D-printing equipment could facilitate the growths of arsenals held by violent extremist organizations.[29] Mexican drug cartels are reported to be developing 3D-printed grenade launchers.[30]

Two privately manufactured 37mm destructive devices

While there are no reliable statistics on how many homemade firearms are being recovered in crimes, since the issue rose to prominence in California, the ATF has documented recoveries of homemade firearms in 38 States plus DC, Puerto Rico, and the Virgin Islands.[28] The ATF noted an increasing number of homemade firearm seizures every year since 2016, and over 1,600 of these firearms have been entered into NIBIN.[28][31]

### Advocates

Gun rights activists support the private production of firearms, claiming the practice as a constitutional right and a way to maintain the privacy of gun owners.[32][33][15] Individuals have organized "build parties" where equipment and expertise are shared to help create homemade firearms. Advocates say that homemade firearms are rarely used in crime despite widespread ownership.[34][15] Gun rights advocates and law enforcement assert that because of the cost and effort required to make homemade firearms, criminals would prefer to steal firearms for use in crime, a fact borne out by DOJ statistics.[35] While the ATF does not track homemade firearms, the FBI reports that their use in crimes is increasing.[28]

### Notable crimes

Noted crimes in which homemade firearms were used include the shooting sprees in Rancho Tehama, California (2017),[36][34][35][37][38] Baltimore, Maryland (2017),[38][37] and Kingsessing, Philadelphia (2023).[39] In each of these cases, the shooter used home-assembled AR-15–style rifles.[38][37][39] The weapon allegedly used by the suspect in the 2024 killing of UnitedHealthcare CEO Brian Thompson is believed by authorities to have been homemade as well.[40] Recently, law enforcement officials in the United States have begun encountering privately made machine gun conversion devices.[41] Devices such as the Glock switch have been used in crimes such as the 2022 Sacramento shooting.[42]

Example of privately made machinegun conversion devices. The devices on the left are Glock switches. The devices on the righthand side are known as 'swift links'. They are used in Glock handguns and AR-15–style rifles, respectively.

On July 8, 2022, former Japanese prime minister Shinzo Abe was assassinated in Nara, Japan, using a homemade "zip-gun" that was electrically fired via a metal filament wire heating up near the propellant.[43]

On February 10, 2026, a mass shooting occurred in Tumbler Ridge, British Columbia, Canada; using a Long gun and a Modified handgun.[44]

## U.S. law

### U.S. federal law

Congress passed the Gun Control Act of 1968 or the GCA, to expand interstate commerce controls over common firearms like handguns, shotguns and rifles.[28] The GCA requires those who are "engaged in the business" of manufacturing or dealing in firearms to be licensed by the ATF.[45] Federal firearms licensees are required to mark their firearms' serial numbers and keep records of their transactions. The GCA also prohibits certain categories of persons, like convicted felons, domestic abusers, current users of illicit drugs and others, from possessing firearms.

To help enforce these prohibitions, Congress passed the Brady Act in 1993, creating the National Instant Criminal Background Check System, or NICS, and requiring FFLs to submit potential firearms purchaser information to NICS before transferring firearms.[28]

While Congress passed the GCA as a response to the assassination of then-President John F. Kennedy, its drafters expressly added that the Act was not intended to place any undue burden on law-abiding citizens who use or make firearms for lawful, private purposes.[28]

#### ATF enforcement and discretion

The ATF's involvement in regulating homemade firearms is primarily through its regulation of the receiver blanks commonly used to create such firearms.[46] The ATF has exerted enforcement discretion in determining when it believes a receiver blank meets the statutory definition of a frame or receiver under the Gun Control Act of 1968.[47] If a receiver blank is believed to be a frame or receiver, it is treated by ATF as a firearm and subjected to certain controls.[48] The following graphic illustrates the features ATF considers[49] preclude a receiver blank from regulation as a frame or receiver:

Features of a receiver blank that ATF does not consider as a 'firearm' under the Gun Control Act of 1968

Conversely, a receiver blank with the following features is considered by the agency to be a receiver subject to control as a 'firearm' under the Gun Control Act of 1968:

Features of a receiver blank that ATF considers as a 'firearm' under the Gun Control Act of 1968

### U.S. state laws

#### California

In 2014, the California Legislature passed a bill to require serial numbers on receiver blanks and all other firearms, including antique guns,[50] but it was vetoed by Governor Jerry Brown.[51] However, in 2016, it passed a measure requiring anyone planning to build a homemade firearm to obtain a serial number from the state (de facto registration) and pass a background check.[52] From July 1, 2024, "firearm precursor parts" may only be sold through a licensed dealer.[53]

#### Colorado

On January 4, 2022, Mayor Michael B. Hancock signed into law a bill outlawing certain homemade firearms in Denver, Colorado. The law outlaws the creation, carriage, transportation, discharge, and sale of firearms without serial numbers.[54]

On June 2, 2023, Governor Jared Polis signed Senate Bill 23-279 (Unserialized Firearms And Firearm Components) into law. The law bans the manufacture, possession and sale of unserialized firearms and unserialized frames/receivers, effective January 1, 2024.[55][56][57] A violation is made a Class 1 misdemeanor, and a subsequent offense is a Class 5 felony.[55][57] It also provides regulations requiring existing unserialized firearms to be serialized by a licensed firearms dealer (and for the owners to have background checks) by January 1, 2024.[55][56][57]

#### Connecticut

Since October 1, 2019, all manufactured guns must have a serial number obtained from the Department of Emergency Services and Public Protection engraved.[58] Any plastic gun that "after removal of grips, stocks and magazines, is not ... detectible" by metal detectors is banned under Connecticut law.[59]

#### Delaware

On October 20, 2021, Governor John Carney signed House Bill 125 into law, which "establishes the crimes of possession of an unfinished firearm frame or receiver with no serial number, possession of and manufacturing a covert or undetectable firearm, possession of and manufacturing an untraceable firearm, and manufacturing or distributing a firearm using a three-dimensional printer."[60] The bill effectively prohibits private manufacture of a firearm, by criminalizing possession of an untraceable firearm, including unfinished frames and receivers.

The Delaware law is being challenged in litigation by gun-rights activists,[61] specifically the Firearms Policy Coalition and two individuals.[62] In September 2022, in the case of Rigby v. Jennings, Federal District Court Judge Maryellen Noreika issued a preliminary injunction that barred Delaware from enforcing the portion of the law that restricts the possession and manufacture of untraceable firearms, siding with plaintiffs on their claim that they were likely to succeed on the merits of their Second Amendment claim.[61][63] However, Noreika denied the plaintiffs' request for an injunction to block the parts of the law that regulate firearm distribution and prohibit distribution of computer code that would facilitate the manufacture of 3D-printed guns.[63]

#### Illinois

With the signing of HB4383 in May 2022, building, selling, or possessing homemade firearms without serial numbers is prohibited in Illinois.[64]

#### Maryland

In 2022 Maryland governor Larry Hogan allowed legislation that will, according to The Washington Post, "ban the sale, receipt and transfer of unfinished frames or receivers that are not serialized by the manufacturer" to become law without his signature.[65] This law will also outlaw the mere possession of such items starting in March 2023.[65]

#### New Jersey

S2465, enacted in November 2018, prohibits the manufacture and sale of guns or parts that are or can become a homemade firearm.[66] Multiple arrests were made within months of this law going into effect. Then State Attorney General Gurbir Grewal aggressively prosecuted infractions of this law. New Jersey filed a lawsuit against U.S. Patriot Armory, a company that allegedly sold AR-15 build kits to New Jersey residents.[67] In July 2019, S3897 was enacted, which criminalizes transferring or possessing unserialized firearms.[68]

#### New York

In 2015, during the state of New York's first prosecution for sale of homemade firearms, Then State Attorney General Eric Schneiderman said that it was "easy" for "criminals to make completely untraceable, military-grade firearms."[69] In 2019, New York passed a law to prohibit the making, selling, transporting or possessing 3D-printed guns or other undetectable firearms.[70]

On October 28, 2021, New York Governor Kathy Hochul signed into law restrictions on homemade firearms. This consisted of The Scott J. Beigel Unfinished Receiver Act and The Jose Webster Untraceable Firearms Act.[71]

#### Pennsylvania

In December 2019 Josh Shapiro, then Attorney General, issued a legal opinion that 80% lower receivers are considered firearms.[72] After a legal challenge, in January 2020 the Commonwealth Court issued a preliminary injunction blocking AG Shapiro's opinion.[73][74][75] A bill passed by the Pennsylvania House of Representatives in 2024 would make it a third-degree felony to sell or transfer firearm parts without serial numbers. The bill has not been passed by the Pennsylvania Senate.[76]

### Pending legislation

#### United States Congress

On July 1, 2020, Representatives Jamie Raskin (MD-08) and David Cicilline (RI-01) introduced House Resolution 7468,[77] aiming to outlaw certain conduct in relation to homemade firearms.[78] As of September 22, 2020, the most recent action taken on the bill was on July 1, when it was referred to the House Committee on the Judiciary.

#### Massachusetts

As of April 2020, there are at least two bills that aim to control the distribution of firearm kits as well as 3D printed firearms in the Commonwealth: Bill H.3843,[79] "An Act relative to ghost guns", presented by Marjorie C. Decker of 25th Middlesex district, and Bill S.2649,[80] "An Act relative to 3D printed firearm and ghost guns", presented by Michael J. Barrett of 3rd Middlesex district. Both bills have been deferred to the Committee of Ways and Means in the Senate and House, respectively.

#### Illinois

On February 7, 2019, Illinois House Rep. Kathleen Willis filed HB2253, entitled the Undetectable and Untraceable Firearms Act, with the Clerk of the House was the Bill was announced to the House.[81] It was then referred to the House Rules Committee for assignment to a substantive committee, and to be formally heard by lawmakers and the public.[81] The Untraceable Firearms Act, for short, proposes to amend the Firearm Owners Identification Card Act primarily by prohibiting the possession, manufacturing, and distribution of "unfinished frames or receivers" without having a FOID (Firearm Owners Identification Card) in his or her possession, among other requirements.[81] HB2253 also proposes to include homemade firearms as a new class of prohibited firearm in certain areas, including public buildings.[81] Violations of HB2253 would result in the commission of a Class 2 felony, punishable by 3 to 7 years in the Illinois Department of Corrections and fines up to $25,000.[82]

The Bill has garnered both support and criticism among lawmakers. In the Bill's introduction, Rep. Willis stated, "I'm not calling for a ban on them, I'm just saying that you need to have the same background checks as you would if you were going to purchase a regular gun..."[83] On the other hand, the Federal Firearms Licensees of Illinois have voiced 2nd Amendment concerns on behalf of gun sellers: "[Rep. Willis is] trying to make it illegal for the home hobbyist to own or possess firearms they've made. They're going after an industry and a hobby and lawful gun owners."[84]

## See also

* Improvised firearm
* List of 3D-printed weapons and parts
* Right to keep and bear arms

## Notes

1. ↑ The term "readily" with respect to firearms is defined in another regulation (27 C.F.R. 478.12(c)), and the ATF stated in a December 2022 open letter that the same definition applies to all firearm frames and receivers.[10]

## References

1. ↑ "What is a privately made firearm (PMF)?". July 22, 2022. https://www.atf.gov/rules-and-regulations/qa/what-privately-made-firearm-pmf. "A PMF is a firearm, including a frame or receiver, completed, assembled, or otherwise produced by a person other than a licensed manufacturer, and without a serial number placed by a licensed manufacturer at the time the firearm was produced."
2. ↑ "ATF Leak Shows Concern for 3D Machinegun Conversion Devices". February 6, 2025. https://www.ammoland.com/2025/02/atf-leak-shows-concern-for-3d-machinegun-conversion-devices/. "The [internal documents from the Bureau of Alcohol, Tobacco, Firearms and Explosives (ATF)] acknowledges that the absence of a serial number on PMFs does not render these items untraceable. This acknowledgment directly contradicts the ATF’s public position that PMFs are dangerous because the lack of serial numbers makes them untraceable."
3. ↑ 3.0 3.1 3.2 3.3 3.4 Greenberg, Andy (June 3, 2015). "I Made an Untraceable AR-15 Ghost Gun in My Office And It Was Easy". Wired. https://www.wired.com/2015/06/i-made-an-untraceable-ar-15-ghost-gun/. Retrieved October 17, 2016.
4. ↑ Muth, Karl (2025). "SCOTUS Goes Ghostbusting: VanDerStok". American Journal of Trial Advocacy 49: 33. https://cumberlandtrialjournal.com/scotus-goes-ghostbusting-vanderstok/. Retrieved February 14, 2025.
5. ↑ "Does an individual need a license to make a firearm for personal use? | Bureau of Alcohol, Tobacco, Firearms and Explosives" (in en). https://www.atf.gov/firearms/qa/does-individual-need-license-make-firearm-personal-use.
6. ↑ Pane, Lisa Marie (November 24, 2019). "'Ghost Guns' Are Untraceable, Easy to Make". Antelope Valley Press. Associated Press. https://www.avpress.com/news/ghost-guns-are-untraceable-easy-to-make/article_862a9cc4-0e71-11ea-8db9-e77de7f4be5d.html.
7. ↑ (in en) How to Make a Homemade Gun (Full Length), March 6, 2015, https://www.youtube.com/watch?v=J4kk2sxiMWU, retrieved 2021-09-12
8. ↑ 8.0 8.1 8.2 8.3 8.4 Andrew Chung & John Kruzel, Biden administration asks US Supreme Court to block 'ghost gun' ruling, Reuters (July 27, 2023).
9. ↑ 9.0 9.1 Ian Millhiser, A new Supreme Court case could allow criminals to get guns without background checks, Vox (August 1, 2023).
10. ↑ 10.0 10.1 Open Letter to All Federal Firearms Licensees, Bureau of Alcohol, Tobacco, Firearms, and Explosives (December 27, 2022).
11. ↑ "Meaning of Terms". https://www.ecfr.gov/current/title-27/chapter-II/subchapter-B/part-478/subpart-B/section-478.11. "The term [firearm] shall include a weapon parts kit that is designed to or may readily be completed, assembled, restored, or otherwise converted to expel a projectile by the action of an explosive."
12. ↑ "18 U.S. Code § 921 - Definitions" (in en). https://www.law.cornell.edu/uscode/text/18/921. "(3) The term 'firearm' means (A) any weapon (including a starter gun) which will or is designed to or may readily be converted to expel a projectile by the action of an explosive; (B) the frame or receiver of any such weapon; (C) any firearm muffler or firearm silencer; or (D) any destructive device. Such term does not include an antique firearm."
13. ↑ Mark Sherman, Supreme Court reinstates regulation of ghost guns, firearms without serial numbers, Associated Press (August 8, 2023).
14. ↑ "District seeks to ban 'ghost gun' kits as seizures of homemade weapons soar". The Washington Post. February 27, 2020. https://www.washingtonpost.com/local/public-safety/district-seeks-to-ban-ghost-gun-kits-as-seizures-of-homemade-weapons-soar/2020/02/27/d12be0da-5416-11ea-9e47-59804be1dcfb_story.html.
15. ↑ 15.0 15.1 15.2 McWilliam, Jamie (26 March 2022). "The Unconstitutionality of Unfinished Receiver Bans" (in en). Harv. J.L. & Pub. Pol'y per Curiam (Cambridge, MA) (9). https://www.harvard-jlpp.com/the-unconstitutionality-of-unfinished-receiver-bans-jamie-g-mcwilliam/.
16. ↑ 16.0 16.1 Sam Stanton; Denny Walsh (December 19, 2015). "California black market surges for ghost guns". The Sacramento Bee. https://www.sacbee.com/news/local/crime/article50685560.html.
17. ↑ Blackman, Josh (June 14, 2014). "The 1st Amendment, 2nd Amendment, And 3d Printed Guns". 81 Tennessee Law Review 479 (2014): p. 511.
18. ↑ "Polymer80's Name Has Become Synonymous With 'Ghost Guns.' Now It's in the Crosshairs" (in en-US). April 4, 2022. https://www.nbcnewyork.com/news/national-international/polymer80s-name-has-become-synonymous-with-ghost-guns-now-its-in-the-crosshairs/3629529/.
19. ↑ "ATF's New 'Ghost Gun' Rules Are as Clear as Mud" (in en-US). 2022-04-12. https://reason.com/2022/04/11/atfs-new-ghost-gun-rules-are-as-clear-as-mud/.
20. ↑ "New Polymer80 PF940v2 Coming This Fall -" (in en-US). 2017-08-15. https://www.thefirearmblog.com/blog/2017/08/15/polymer80-pf940v2/.
21. ↑ "Agents Recover Thousands of Bullets, 3D Printer And Ghost Guns From Convicted Felon's Residence". Newsweek. February 27, 2020. https://www.newsweek.com/ghost-guns-washington-ammunition-1489617.
22. ↑ Greenberg, Andy. "The $1,200 Machine That Lets Anyone Make a Metal Gun at Home". Wired. https://www.wired.com/2014/10/cody-wilson-ghost-gunner/.
23. ↑ "Illegal Firearm Maker Dr. Death Helped Create Untraceable Ghost Guns". CBS SF Bay Area. May 19, 2016. http://sanfrancisco.cbslocal.com/2016/05/19/illegal-firearm-maker-doctor-death-helped-creates-untraceable-ghost-guns/.
24. ↑ NYPD Intelligence Division Major Case Field Intelligence Team. Ghost Guns: Past, Present, and Future. New York: New York Police Department, 2023. https://trackingterrorism.org/wp-content/uploads/2023/11/NYPD-Ghostguns.pdf
25. ↑ https://smallarmsreview.com/philippine-underground-workshop-submachine-guns/
26. ↑ "GHOST GUNS". National Geographic. http://channel.nationalgeographic.com/underworld-inc/episodes/ghost-guns/.
27. ↑ "A Blueprint for a U.S. Firearms Data Infrastructure: Final Recommendations of the Expert Panel on Firearms Data Infrastructure". NORC at the University of Chicago. October 2020. p. 14. https://www.norc.org/content/dam/norc-org/pdfs/A Blueprint for a U.S. Firearms Data Infrastructure_NORC Expert Panel Final Report_October 2020.pdf. "There is no make, model, or serial number on these firearms. Data systems are not able to track this market in a meaningful, actionable way"
28. ↑ 28.0 28.1 28.2 28.3 28.4 28.5 28.6 Keith, Phil (April 8, 2020). "Presidential Commissionon on Law Enforcement and the Administration of Justice". U.S. Department of Justice. 4278911_2_k14MbL. https://www.justice.gov/ag/page/file/1267786/download.
29. ↑ 29.0 29.1 Garen J. Wintemute (2021). "Ghost guns: spookier than you think they are". Injury Epidemiology 8. doi:10.1186/s40621-021-00306-. https://injepijournal.biomedcentral.com/articles/10.1186/s40621-021-00306-.
30. ↑ Hamilton, Keegan (2023-03-15). "People Are 3D Printing Anti-Tank Rocket Launchers Now" (in en). https://www.vice.com/en/article/3d-printed-rocket-launcher/.
31. ↑ "Sacramento At Center Of Untraceable 'Ghost Gun' Surge". CBS Sacramento. May 16, 2016. http://sacramento.cbslocal.com/2016/05/16/sacramento-at-center-of-untraceable-ghost-gun-surge/.
32. ↑ Moody, Oliver (June 25, 2016). "Anarchist will supply kit to build your own assault rifle". The Times [London (UK)].
33. ↑ Horwitz, Sara (May 13, 2014). "Unfinished receivers, a gun part that is sold separately, lets some get around the law". The Washington Post. https://www.washingtonpost.com/world/national-security/unfinished-receivers-that-can-be-used-to-build-guns-pose-problems-for-law-enforcement/2014/05/13/8ec39e9e-da51-11e3-bda1-9b46b2066796_story.html?postshare=6861473266526376&tid=ss_tw.
34. ↑ 34.0 34.1 Hurd, Rick (August 7, 2015). "Police Eye 'Ghost Gun' In Recent Slaying: With The Rise Of Homemade Firearms, Legislation Sought To Make It Easier To Trace Them". San Jose Mercury News: p. A1.
35. ↑ 35.0 35.1 Hurd, Rick (August 12, 2016). "Homemade gun in Stanford student's murder-suicide spurs question on 'ghost guns'". The Mercury News. http://www.mercurynews.com/2015/08/06/homemade-gun-in-stanford-students-murder-suicide-spurs-question-on-ghost-guns/.
36. ↑ Melendez, Lyanne (August 4, 2015). "Walnut Creek Police Say 'Ghost Gun' Used In Murder-Suicide". KGO-TV San Francisco, ABC News. http://abc7news.com/news/walnut-creek-police-say-ghost-gun-used-in-murder-suicide/903250/.
37. ↑ 37.0 37.1 37.2 "Shooting rampage in California highlights "ghost guns" and their dangers". CBS News. November 16, 2017. https://www.cbsnews.com/news/ghost-guns-shooting-rancho-tehama-california/.
38. ↑ 38.0 38.1 38.2 Andrew Blankstein and Corky Siemaszko, California mass shooter made his own rifle, NBC News (2016).
39. ↑ 39.0 39.1 Bill Hutchinson, Philly leaders sue ghost gun manufacturers just days after mass shooting, ABC News (July 6, 2023).
40. ↑ https://www.nytimes.com/2024/12/10/nyregion/uhc-killing-ghost-gun-3d-printing.html?smid=nytcore-ios-share
41. ↑ Stephens, Alain (2022-03-24). "The Return of the Machine Gun" (in en-us). https://www.thetrace.org/2022/03/auto-sear-gun-chip-glock-switch-automatic-conversion/.
42. ↑ Stephens, Alain; Hamilton, Keegan (2022-04-04). "A Machine Gun Was Likely Used In Sacramento's Chaotic Mass Shooting" (in en). https://www.vice.com/en/article/sacramento-mass-shooting-machine-gun/.
43. ↑ Satoshi Sugiyama; Chang-Ran Kim (8 July 2022). "Shinzo Abe's assassin used a handmade firearm" (in en). Reuters. https://www.reuters.com/world/asia-pacific/japan-ex-prime-minister-abe-may-have-been-shot-taken-hospital-nhk-2022-07-08/.
44. ↑ Campbell, Lucy; McEwen, Kirsty; Ali, Taz; Ambrose, Tom; Saunokonoko, Mark; Yang, Maya; McEwen, Lucy Campbell (now); Kirsty; Yang (earlier), Maya (2026-02-11). "Tumbler Ridge school shooting: police identify suspect in Canada attack as 18-year-old local resident – as it happened" (in en-GB). the Guardian. ISSN 0261-3077. https://www.theguardian.com/world/live/2026/feb/11/tumbler-ridge-school-shooting-live-updates-number-dead-suspect-deceased.
45. ↑ "Do I Need a License to Buy and Sell Firearms?". January 1, 2016. https://www.atf.gov/file/100871/download.
46. ↑ Nicastro, Johnathan (2023-08-09). "Yes, the ATF Can Legally Regulate Ghost Guns" (in en-US). https://www.nationalreview.com/2023/08/yes-the-atf-can-legally-regulate-ghost-guns/.
47. ↑ "Ghost Guns" (in en-US). https://giffords.org/gun-laws/policy-areas/hardware-ammunition/ghost-guns/.
48. ↑ Berman, Mark (2022-08-24). "'Ghost guns' now must be traceable, as Biden rule takes effect" (in en-US). Washington Post. ISSN 0190-8286. https://www.washingtonpost.com/national-security/2022/08/24/ghost-guns-biden/.
49. ↑ Graham, Andrew; Henderson, William (September 27, 2022). "lmpact of Final Rule 2021-05F on Partially Complete AR-15/M-16 Type Receivers". https://www.atf.gov/firearms/docs/open-letter/all-ffls-september-2022-impact-final-rule-2021-05f-partially-complete-ar/download.
50. ↑ Eger, Chris (September 14, 2014). "California Ghost Gun Bill creeps onto governor's desk". Guns.com. http://www.guns.com/2014/09/02/california-ghost-gun-bill-creeps-onto-governors-desk/.
51. ↑ "California Governor Jerry Brown Vetoes "Ghost Gun" Ban, Signs Three Other Gun Control Bills" (in en-US). https://www.calffl.org/press-releases/california-governor-jerry-brown-vetoes-ghost-gun-ban-signs-three-gun-control-bills/.
52. ↑ Dobuzinski, Alex (July 23, 2016). "California governor signs bill to require registration of 'ghost guns'". Reuters. https://www.reuters.com/article/us-california-ghostguns-idUSKCN1022MB.
53. ↑ "Bill Text - AB-879 Firearms.". https://leginfo.legislature.ca.gov/faces/billNavClient.xhtml?bill_id=201920200AB879.
54. ↑ Morgan Keith (4 Jan 2022). "Ghost guns – easily assembled firearms without serial numbers – are now banned in Denver". https://www.businessinsider.com/ghost-guns-firearms-serial-numbers-banned-in-denver-2022-1.
55. ↑ 55.0 55.1 55.2 SB23-279, Unserialized Firearms And Firearm Components
56. ↑ 56.0 56.1 Ghost guns ban wins final approval from House Democrats, KUSA (May 5, 2023).
57. ↑ 57.0 57.1 57.2 Jesse Paul (June 2, 2023). "Colorado bans the manufacture, possession and sale of "ghost guns"". https://coloradosun.com/2023/06/02/colorado-bans-ghost-guns/.
58. ↑ "Connecticut General Assembly" (in en-US). https://www.cga.ct.gov/asp/cgabillstatus/cgabillstatus.asp?selBillType=Bill&which_year=2019&bill_num=7219.
59. ↑ "AN ACT CONCERNING GHOST GUNS" (in en-US). https://www.cga.ct.gov/2019/act/pa/pdf/2019PA-00006-R00HB-07219-PA.pdf.
60. ↑ DJ McAneny (20 Oct 2021). "Carney signs bills into Delaware law barring abusers from possessing guns, banning 'ghost guns'". https://www.wdel.com/news/carney-signs-bills-into-delaware-law-barring-abusers-from-possessing-guns-banning-ghost-guns/article_571265a0-31c6-11ec-97b1-fb14413e83e0.html.
61. ↑ 61.0 61.1 Randall Chase (September 24, 2022). "Federal judge bars enforcement of Delaware 'ghost gun' restrictions". Associated Press News. https://apnews.com/article/lawsuits-gun-politics-delaware-dover-39cc2a436ba0df094e9474ebd8d3d75d/.
62. ↑ Melissa Steele (2 Oct 2022). "Delaware ghost gun bill on hold". Cape Gazette. https://www.capegazette.com/article/delaware-ghost-gun-bill-hold/246623.
63. ↑ 63.0 63.1 Jacklyn Wille, Delaware 'Ghost Gun' Restrictions Partially Blocked by Judge, Bloomberg Law (September 26, 2022).
64. ↑ "What Are 'Ghost Guns', and Why Are They Now Banned in Illinois?". NBC Chicago. May 18, 2022. https://www.nbcchicago.com/news/local/chicago-politics/what-are-ghost-guns-and-why-are-they-now-banned-in-illinois/2835952/.
65. ↑ 65.0 65.1 "Ghost guns to become outlawed in Maryland without Hogan's signature". The Washington Post. April 8, 2022. https://www.washingtonpost.com/dc-md-va/2022/04/08/hogan-vetoes-maryland/.
66. ↑ "New Jersey S2465 | 2018-2019 | Regular Session" (in en). https://legiscan.com/NJ/bill/S2465/2018.
67. ↑ "New Jersey sues company over illegal 'ghost gun' sales" (in en). Reuters. 2019-03-22. https://www.reuters.com/article/us-new-jersey-ghost-guns-lawsuit-idUSKCN1R32DA.
68. ↑ "New Jersey S3897 | 2018-2019 | Regular Session" (in en). https://legiscan.com/NJ/bill/S3897/2018.
69. ↑ Bolger, Timothy (June 26, 2015). "Long Island Trio Charged in NY's First Ghost Gun Bust". Long Island Press. https://www.longislandpress.com/2015/06/26/long-island-trio-charged-in-nys-first-ghost-gun-bust/.
70. ↑ Slattery, Denis (July 30, 2019). "New York bans 3-D-printed guns and other untraceable DIY firearms known as 'ghost guns'". https://www.nydailynews.com/news/politics/ny-ghost-guns-untraceable-weapons-parts-printing-banned-20190730-2pexs3sl2zbjzptg64euktzbly-story.html.
71. ↑ Anna M. Kaplan (28 Oct 2021). "Nation's Toughest Restrictions on Ghost Guns Signed Into Law by Governor Kathy Hochul". https://www.nysenate.gov/newsroom/press-releases/anna-m-kaplan/nations-toughest-restrictions-ghost-guns-signed-law-governor.
72. ↑ "AG Shapiro, Gov. Wolf: 80% Receivers Are Firearms" (in en). https://www.attorneygeneral.gov/taking-action/press-releases/ag-shapiro-gov-wolf-80-receivers-are-firearms/.
73. ↑ "PAFirearmCase.com - Landmark Firearms, et al. v. PSP Commissioner Robert Evanchick" (in en). https://www.firearmspolicy.org/evanchick.
74. ↑ Prince, Joshua; Esq. (2020-01-31). "Injunction GRANTED against Pennsylvania State Police's Policy relating to "Partially-Manufactured Frames and Receivers"" (in en). https://blog.princelaw.com/2020/01/31/injunction-granted-against-pennsylvania-state-polices-policy-relating-to-partially-manufactured-frames-and-receivers/.
75. ↑ "Pennsylvania judge puts hold on state 'ghost guns' policy" (in en). https://www.yorkdispatch.com/story/news/local/pennsylvania/2020/02/02/pennsylvania-judge-puts-hold-state-ghost-guns-policy/41128331/.
76. ↑ "Bill Information (History) - House Bill 777; Regular Session 2023-2024". https://www.legis.state.pa.us/cfdocs/billinfo/bill_history.cfm?syear=2023&sind=0&body=H&type=B&bn=777.
77. ↑ Raskin, Jamie (July 1, 2020). "H.R.7468 - 116th Congress (2019-2020): Stop Home Manufacture of Ghost Guns Act of 2020". https://www.congress.gov/bill/116th-congress/house-bill/7468.
78. ↑ "Raskin, Cicilline Introduce Legislation to Stop Home Manufacture of "Ghost Guns"". July 2, 2020. https://raskin.house.gov/media/press-releases/raskin-cicilline-introduce-legislation-stop-home-manufacture-ghost-guns.
79. ↑ "An Act relative to ghost guns". 2019. https://malegislature.gov/Bills/191/H3843.
80. ↑ "Bill S.2649 (An Act relative to 3D printed weapons and ghost guns)". https://malegislature.gov/Bills/191/S2649.
81. ↑ 81.0 81.1 81.2 81.3 "Illinois General Assembly - Bill Status for HB2253". https://www.ilga.gov/legislation/BillStatus.asp?DocNum=2253&GAID=15&DocTypeID=HB&LegId=118045&SessionID=108&GA=101.
82. ↑ "Illinois General Assembly - Full Text of HB2253". https://www.ilga.gov/legislation/fulltext.asp?DocName=&SessionId=108&GA=101&DocTypeId=HB&DocNum=2253&GAID=15&LegID=118045&SpecSess=&Session=.
83. ↑ Illinois, JERRY NOWICKI Capitol News (February 13, 2019). "Illinois bill aims to regulate homemade guns, blueprints" (in en). https://thesouthern.com/news/local/govt-and-politics/illinois-bill-aims-to-regulate-homemade-guns-blueprints/article_03333b7b-3855-5093-a19e-c26d00f5d6b4.html.
84. ↑ "Bill aims to regulate homemade guns, blueprints" (in en-US). February 13, 2019. https://capitolnewsillinois.com/NEWS/bill-aims-to-regulate-homemade-guns-blueprints.

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