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Bump stocks or bump fire stocks are
gun stock A gunstock or often simply stock, the back portion of which is also known as a shoulder stock, a buttstock or simply a butt, is a part of a long gun that provides structural support, to which the barrel, action, and firing mechanism are attache ...
s that can be used to assist in bump firing. Bump firing is the act of using the
recoil Recoil (often called knockback, kickback or simply kick) is the rearward thrust generated when a gun is being discharged. In technical terms, the recoil is a result of conservation of momentum, as according to Newton's third law the force r ...
of a
semi-automatic firearm A semi-automatic firearm, also called a self-loading or autoloading firearm ( fully automatic and selective fire firearms are also variations on self-loading firearms), is a repeating firearm whose action mechanism ''automatically'' loads a fol ...
to fire ammunition cartridges in rapid succession. The legality of bump stocks in the United States came under question following the
2017 Las Vegas shooting On October 1, 2017, Stephen Paddock, a 64-year-old man from Mesquite, Nevada, opened fire on the crowd attending the Route 91 Harvest music festival on the Las Vegas Strip in . From his 32nd-floor suites in the Mandalay Bay hotel, he fired m ...
, in which 60 people were killed and 867 people injured. The gunman was found to have fitted them to his weapons. Several states passed legislation restricting ownership of bump stocks following this shooting and the one at Marjory Stoneman Douglas High School 4 months later. The
U.S. Justice Department The United States Department of Justice (DOJ), also known as the Justice Department, is a federal executive department of the United States government tasked with the enforcement of federal law and administration of justice in the United States ...
banned them at the federal level in December 2018.


Bump fire stocks

Bump fire stocks are gun stocks that are specially designed to make bump firing easier, but do not make the
firearm A firearm is any type of gun designed to be readily carried and used by an individual. The term is legally defined further in different countries (see Legal definitions). The first firearms originated in 10th-century China, when bamboo tubes ...
automatic. Essentially, bump stocks assist rapid fire by "bumping" the trigger against one's finger (as opposed to one's finger pulling on the trigger), thus allowing the firearm's
recoil Recoil (often called knockback, kickback or simply kick) is the rearward thrust generated when a gun is being discharged. In technical terms, the recoil is a result of conservation of momentum, as according to Newton's third law the force r ...
, plus constant forward pressure by the non-shooting arm, to actuate the trigger. Bump fire stocks can be placed on a few common weapon platforms such as the AR or AK families. They can achieve rates of fire between 400 and 800 rounds per minute depending on the gun. By 2018, bump fire stocks in the United States were sold for around $100 and up, with prices increasing prior to enactment of federal regulation. Slide Fire Solutions, the inventor, patent holder, and leading manufacturer of bump stocks, suspended sales after bump stocks were used in the
2017 Las Vegas shooting On October 1, 2017, Stephen Paddock, a 64-year-old man from Mesquite, Nevada, opened fire on the crowd attending the Route 91 Harvest music festival on the Las Vegas Strip in . From his 32nd-floor suites in the Mandalay Bay hotel, he fired m ...
, and resumed sales a month later. On May 20, 2018, 95 days after the
Stoneman Douglas High School shooting On February 14, 2018, 19-year-old Nikolas Cruz opened fire on students and staff at Marjory Stoneman Douglas High School in the Miami suburban town of Parkland, Florida, murdering 17 people and injuring 17 others. Cruz, a former student at ...
, Slide Fire Solutions permanently halted sales and production of its products.


History of regulation

In 2002, one of the first bump stock-type devices, the ''Akins Accelerator'' invented by Bill Akins, was deemed by the US
Bureau of Alcohol, Tobacco, Firearms and Explosives The Bureau of Alcohol, Tobacco, Firearms and Explosives (BATFE), commonly referred to as the ATF, is a domestic law enforcement agency within the United States Department of Justice. Its responsibilities include the investigation and preve ...
(ATF) to not be a "
machinegun A machine gun is a fully automatic, rifled autoloading firearm designed for sustained direct fire with rifle cartridges. Other automatic firearms such as automatic shotguns and automatic rifles (including assault rifles and battle rifles) ar ...
". The Akins Accelerator used an internal spring to force the firearm forward to re-make contact with the trigger finger after the recoil of the previous shot pushed the firearm rearward. The ATF interpreted a "single function of the trigger" to mean a "single movement of the trigger", and since the trigger moved for each shot, the Akins Accelerator was deemed to not be a machinegun. Later, in 2006, the ATF reversed course and reinterpreted the language to mean "single pull of the trigger", which reclassified the Akins Accelerator as a machinegun. The Eleventh Circuit Court of Appeals upheld the new interpretation in February 2009. More modern bump stocks were invented by Slide Fire Solutions founder Jeremiah Cottle as a replacement stock for people who have limited hand mobility. Such bump stocks have no internal spring and require constant forward pressure by the non-shooting arm in order to maintain continuous fire. Between 2008 and 2017, the ATF issued ten letter rulings that classified bump stocks as a "firearm part", which are unregulated. However, in March 2018, as a result of the use of bump stocks in the
2017 Las Vegas shooting On October 1, 2017, Stephen Paddock, a 64-year-old man from Mesquite, Nevada, opened fire on the crowd attending the Route 91 Harvest music festival on the Las Vegas Strip in . From his 32nd-floor suites in the Mandalay Bay hotel, he fired m ...
, the U.S. Department of Justice announced a plan to reclassify bump stocks as "machineguns" under existing federal law, effectivelyMachineguns manufactured after May 1986 are illegal on the federal level, but pre-1986 ones remain legal in most states and are highly regulated. Since bump stocks were not invented until 2010, all existing supplies effectively become illegal if classified as a machinegun. banning them nationwide. Only two states had banned bump stocks prior to the Las Vegas shooting. The final rule of the DoJ was issued on December 18, 2018. Now, , bump stocks are illegal for almost all US civilians, but multiple lawsuits are pending that challenge that rule. In May 2019, the Offensive Weapons Act 2019 prohibited bump stocks in the UK.


Public opinion

Immediately following the 2017 Las Vegas shooting, 72% of registered voters supported a bump stock ban, including 68% of Republicans and 79% of Democrats. A 2018 poll found 81% of American adults supported banning bump stocks with a margin of error of ±3.5%. A different poll around the same time found 56% of American adults supported banning bump stocks with a margin of error of ±4%.


Regulatory status in the United States


Federal

The ATF ruled in 2010 that bump stocks were not a firearm subject to regulation and allowed their sale as an unregulated firearm part. In the
2017 Las Vegas shooting On October 1, 2017, Stephen Paddock, a 64-year-old man from Mesquite, Nevada, opened fire on the crowd attending the Route 91 Harvest music festival on the Las Vegas Strip in . From his 32nd-floor suites in the Mandalay Bay hotel, he fired m ...
, twelve bump stocks were found at the scene. The
National Rifle Association The National Rifle Association of America (NRA) is a gun rights advocacy group based in the United States. Founded in 1871 to advance rifle marksmanship, the modern NRA has become a prominent gun rights lobbying organization while cont ...
stated on October 5, 2017, "Devices designed to allow semi-automatic rifles to function like fully-automatic rifles should be subject to additional regulations", and called on regulators to "immediately review whether these devices comply with federal law". The 2017 shooting generated bipartisan interest in regulating bump stocks. On October 4, 2017, Senator
Dianne Feinstein Dianne Goldman Berman Feinstein ( ; born Dianne Emiel Goldman; June 22, 1933) is an American politician who serves as the senior United States senator from California, a seat she has held since 1992. A member of the Democratic Party, she wa ...
introduced a bill to ban bump stocks, but it was not acted upon. Instead, on February 20, 2018, President Trump instructed the ATF to issue regulations to treat bump stocks as
machinegun A machine gun is a fully automatic, rifled autoloading firearm designed for sustained direct fire with rifle cartridges. Other automatic firearms such as automatic shotguns and automatic rifles (including assault rifles and battle rifles) ar ...
s. President
Donald Trump Donald John Trump (born June 14, 1946) is an American politician, media personality, and businessman who served as the 45th president of the United States from 2017 to 2021. Trump graduated from the Wharton School of the University of P ...
blamed former President
Barack Obama Barack Hussein Obama II ( ; born August 4, 1961) is an American politician who served as the 44th president of the United States from 2009 to 2017. A member of the Democratic Party (United States), Democratic Party, Obama was the first Af ...
for having "legalized bump stocks", which he termed a "BAD IDEA",Dan Merica.
Trump moves closer to banning bump fire stocks
. CNN, March 23, 2018. Accessed March 10, 2021.
a claim which was found to be partly erroneous by ''
USA Today ''USA Today'' (stylized in all uppercase) is an American daily middle-market newspaper and news broadcasting company. Founded by Al Neuharth on September 15, 1982, the newspaper operates from Gannett's corporate headquarters in Tysons, Virgini ...
''. On March 23, 2018, at President Trump's request the Department of Justice announced a plan to ban bump stocks at the federal level. The proposed change would reclassify bump stocks as "machineguns" and effectively ban the devices in the United States under existing federal law. A notice of proposed rulemaking was issued by the ATF on March 29, 2018, and opened for public comments. Over 119,000 comments were submitted in support of the proposed rule, while over 66,000 comments expressed opposition to it. On December 18, 2018, the final regulation to ban bump stocks was issued by the Department of Justice and published in the ''
Federal Register The ''Federal Register'' (FR or sometimes Fed. Reg.) is the official journal of the federal government of the United States that contains government agency rules, proposed rules, and public notices. It is published every weekday, except on fede ...
'' on December 26.Bump-Stock-Type Devices
83 Fed. Reg. 66,514 (Dec. 26, 2018).
The final rule states that "bump-stock-type devices" are covered by the
Gun Control Act The Gun Control Act of 1968 (GCA or GCA68) is a U.S. federal law that regulates the firearms industry and firearms ownership. Due to constitutional limitations, the Act is primarily based on regulating interstate commerce in firearms by generally ...
, as amended, which with limited exceptions, makes it unlawful for any person to transfer or possess a machinegun unless it was lawfully possessed prior to 1986. Since the bump-stock-type devices covered by this final rule were not in existence prior to 1986, they would be prohibited when the rule becomes effective. The ban went into effect on March 26, 2019, by which owners of bump stocks were required to destroy them or surrender them to ATF, punishable by 10 years imprisonment and a $250,000 fine.


State

Prior to the federal ban effective March 26, 2019, some states had taken action on their own to restrict ownership of the accessory. Since 1990, the sale of bump stocks has been illegal in California. They were banned in New York with the passage of the
NY SAFE Act The New York Secure Ammunition and Firearms Enforcement Act of 2013, commonly known as the NY SAFE Act, is a gun regulation statute, law in the state of New York (state), New York. The law was passed by the New York State Legislature and was sig ...
in 2013, and more explicitly banned in early 2019. The device's legal status is unclear in Connecticut, Michigan, Minnesota, and Puerto Rico.


After the 2017 Las Vegas shooting

In his final day as governor in January 2018,
New Jersey Governor The governor of New Jersey is the head of government of New Jersey. The office of governor is an elected position with a four-year term. There is a two consecutive term term limit, with no limitation on non-consecutive terms. The official res ...
Chris Christie Christopher James Christie (born September 6, 1962) is an American politician, lawyer, political commentator, lobbyist, and former federal prosecutor who served as the 55th governor of New Jersey from 2010 to 2018. Christie, who was born in N ...
signed legislation making the gun accessory illegal in New Jersey. Massachusetts banned bump stocks after the
2017 Las Vegas shooting On October 1, 2017, Stephen Paddock, a 64-year-old man from Mesquite, Nevada, opened fire on the crowd attending the Route 91 Harvest music festival on the Las Vegas Strip in . From his 32nd-floor suites in the Mandalay Bay hotel, he fired m ...
. In March 2018, following the
Stoneman Douglas High School shooting On February 14, 2018, 19-year-old Nikolas Cruz opened fire on students and staff at Marjory Stoneman Douglas High School in the Miami suburban town of Parkland, Florida, murdering 17 people and injuring 17 others. Cruz, a former student at ...
,
Florida Florida is a state located in the Southeastern region of the United States. Florida is bordered to the west by the Gulf of Mexico, to the northwest by Alabama, to the north by Georgia, to the east by the Bahamas and Atlantic Ocean, and ...
enacted SB 7026, which, among other things, banned bump stocks. The portion of the legislation banning bump stocks took effect in October 2018; possession in Florida is a third-degree felony. Vermont passed a similar law in 2018, which went into effect in October 2018; possession in Vermont is a
misdemeanor A misdemeanor (American English, spelled misdemeanour elsewhere) is any "lesser" criminal act in some common law legal systems. Misdemeanors are generally punished less severely than more serious felonies, but theoretically more so than adm ...
. Delaware, Hawaii, Maryland, Washington, Washington D.C., and Nevada have also banned bump stocks. Some states that do not ban bump stocks may have localities that ban them, such as
Northbrook, Illinois Northbrook is a suburb of Chicago, located at the northern edge of Cook County, Illinois, United States, on the border of Lake County. Per the 2020 census, the population was 35,222. When incorporated in 1901, the village was known as Shermerv ...
(April 2018);
Boulder, Colorado Boulder is a home rule city that is the county seat and most populous municipality of Boulder County, Colorado, United States. The city population was 108,250 at the 2020 United States census, making it the 12th most populous city in Colora ...
(May 2018); and others.


Federal lawsuits

Several gun rights groups have challenged the federal regulation.


Gun Owners of America

In December 2018,
Gun Owners of America Gun Owners of America (GOA) is a gun rights organization in the United States. It makes efforts to differentiate itself from the larger National Rifle Association (NRA) and has publicly criticized the NRA on multiple occasions for what it consi ...
sued the federal government in the U.S. District Court for the Western District of Michigan, challenging the bump stock ban. On March 21, 2019, the group's request for a
preliminary injunction An injunction is a legal and equitable remedy in the form of a special court order that compels a party to do or refrain from specific acts. ("The court of appeals ... has exclusive jurisdiction to enjoin, set aside, suspend (in whole or in p ...
was denied by the district court. The
U.S. Court of Appeals for the Sixth Circuit The United States Court of Appeals for the Sixth Circuit (in case citations, 6th Cir.) is a federal court with appellate jurisdiction over the district courts in the following districts: * Eastern District of Kentucky * Western District of K ...
and U.S. Supreme Court both denied a stay on the effective date of the regulation pending the appeal. Following
oral argument Oral arguments are spoken presentations to a judge or appellate court by a lawyer (or parties when representing themselves) of the legal reasons why they should prevail. Oral argument at the appellate level accompanies written briefs, which also a ...
in December 2020, the Sixth Circuit panel issued a 2–1 ruling in favor of the plaintiffs on March 25, 2021.
Gun Owners of America, Inc. v. Garland
', 992 F.3d 446 (6th Cir. 2021).
The majority decision, written by Judge
Alice M. Batchelder Alice M. Moore Batchelder (born August 15, 1944) is an American attorney and jurist. She is currently a senior United States circuit judge of the United States Court of Appeals for the Sixth Circuit. She served as chief judge from 2009 until 20 ...
and joined by Judge
Eric E. Murphy Eric Earl Murphy (born 1979) is a United States circuit judge of the United States Court of Appeals for the Sixth Circuit and former Solicitor General of Ohio. Biography Murphy earned his Bachelor of Arts, summa cum laude, from Miami Unive ...
, ruled that (1) an agency's interpretation of a criminal statute is not entitled to ''Chevron'' deference, (2) bump stocks cannot be classified as machineguns, thus the ATF's rule is not the best interpretation of the law, and (3) the plaintiffs are likely to prevail in their challenge, therefore the district court should have granted an injunction. The court remanded the case back to the district court for proceedings in accordance with its opinion (i.e., to issue an injunction).Brian Flood
Federal Bump Stock Ban Blocked by Divided Appeals Court
Bloomberg Law Bloomberg Law is a subscription-based service that uses data analytics and artificial intelligence for online legal research. The service, which Bloomberg L.P. introduced in 2009, provides legal content, proprietary company information and news ...
, March 25, 2021. Accessed March 26, 2021.
Judge
Helene White Helene N. White (born December 2, 1954) is a Senior United States circuit judge of the United States Court of Appeals for the Sixth Circuit. Previously, she was a judge on the Michigan Court of Appeals. Background Born in Jackson Heights, Q ...
dissented, writing that the Supreme Court had previously applied ''Chevron'' deference to agency interpretations of criminal statutes in the cases of '' Babbitt v. Sweet Home Chapter of Communities for a Great Oregon'' and '' United States v. O'Hagan''. The appeals court granted an en banc petition on June 25, 2021 and heard oral argument in October 2021. On December 3, 2021, the court issued an 8-8 split decision, thus leaving the district court's denial of a preliminary injunction in place. The Supreme Court declined to hear the case on October 3, 2022.


Guedes (Firearms Policy Coalition) and Codrea

The Firearms Policy Coalition and other gun-rights groups sued in the federal district court in Washington, D.C., also seeking an injunction. In February 2019, U.S. District Judge
Dabney L. Friedrich Dabney Langhorne Friedrich (née Patricia Dabney Langhorne; born June 19, 1967) is an American attorney and jurist serving as a United States federal judge, United States district court judge of the United States District Court for the District o ...
denied the Firearms Policy Coalition's request for an injunction, determining that the group had not put forward convincing legal arguments that the ban was invalid. The
U.S. Court of Appeals for the D.C. Circuit The United States Court of Appeals for the District of Columbia Circuit (in case citations, D.C. Cir.) is one of the thirteen United States Courts of Appeals. It has the smallest geographical jurisdiction of any of the U.S. federal appellate cou ...
stayed the effective date of the regulation, but only as applied to the plaintiffs and their members.
Guedes v. Bureau of Alcohol, Tobacco, Firearms and Explosives
', 920 F.3d 1 (D.C. Cir. 2019).
A broader injunction was denied by the Supreme Court. On April 1, 2019, the D.C. Circuit affirmed the district court's denial of a preliminary injunction in a ''per curiam'' decision, based largely on ''Chevron'' deference. The decision allowed the ban to go into effect for the plaintiffs. Judge
Karen L. Henderson Karen LeCraft Henderson (born July 11, 1944) is a United States circuit judge of the United States Court of Appeals for the District of Columbia Circuit and a former United States District Judge of the United States District Court for the District ...
issued an opinion concurring in part and dissenting in part. A second stay application was denied by the Supreme Court on April 5, 2019, with
Thomas Thomas may refer to: People * List of people with given name Thomas * Thomas (name) * Thomas (surname) * Saint Thomas (disambiguation) * Thomas Aquinas (1225–1274) Italian Dominican friar, philosopher, and Doctor of the Church * Thomas the Ap ...
and Gorsuch indicating that they would have granted the application. The Supreme Court denied a petition for a
writ of certiorari In law, ''certiorari'' is a court process to seek judicial review of a decision of a lower court or government agency. ''Certiorari'' comes from the name of an English prerogative writ, issued by a superior court to direct that the record of ...
(petition for review) on March 2, 2020; Gorsuch issued a statement agreeing that the time was not right for Supreme Court review, but criticizing the D.C. Circuit's position and writing that "''Chevron''s application in this case may be doubtful." The case then returned to the district court on the merits, and in February 2021, the court granted
summary judgment In law, a summary judgment (also judgment as a matter of law or summary disposition) is a judgment entered by a court A court is any person or institution, often as a government institution, with the authority to adjudicate legal disputes ...
in favor of the government, holding that ''Chevron'' deference applied; that ATF had the authority to state that the NFA's definition of "machinegun" includes bump stocks; and that ATF's interpretation of the statutory language was reasonable. The court also rejected the plaintiffs' Taking Clause and
Ex Post Facto Clause An ''ex post facto'' law (from ) is a law that retroactively changes the legal consequences (or status) of actions that were committed, or relationships that existed, before the enactment of the law. In criminal law, it may criminalize actions t ...
claims, as well as their claim that the underlying statutes were impermissibly vague. On August 9, 2022, the D.C. Circuit Court of Appeals upheld the ban by reasoning that it was the best reading of the law without applying ''Chevron'' deference.


Aposhian and Cargill

In 2019, W. Clark Aposhian, the chairman of the Utah Shooting Sports Council, a gun rights group, sued the ATF in the federal district court of Utah over the bump stock ban, arguing that the promulgation of the regulation exceeded the ATF's statutory authority. Aposhian is represented by the New Civil Liberties Alliance.Dennis Romboy
Utah gun advocate still fighting to overturn federal bump stock ban
''Deseret News'' (January 27, 2021).
The district court denied the plaintiffs' request for a preliminary injunction to block the ban in March 2019. In March 2019, the
U.S. Court of Appeals for the Tenth Circuit The United States Court of Appeals for the Tenth Circuit (in case citations, 10th Cir.) is a federal court with appellate jurisdiction over the district courts in the following districts: * District of Colorado * District of Kansas * Distri ...
granted a temporary stay that applies only to the plaintiff, but ultimately upheld the denial of a preliminary injunction.Amanda Pampuro
10th Circuit Backs Out of Opening Phase of Fight Over Bump Stock Ban
Courthouse News Service (March 5, 2021).
In April 2019, in a divided opinion, the Tenth Circuit denied the motion for a stay, and a divided panel upheld the district court's ruling. The appeals court granted review ''
en banc In law, an en banc session (; French for "in bench"; also known as ''in banc'', ''in banco'' or ''in bank'') is a session in which a case is heard before all the judges of a court (before the entire bench) rather than by one judge or a smaller ...
'' (i.e., by the full court), but ultimately dismissed the grant of ''en banc'' rehearing as improvidently granted, allowing the panel decision (and thus the bump-stock ban) to stay in place. The Supreme Court declined to hear the case on October 3, 2022. An
Austin, Texas Austin is the capital city of the U.S. state of Texas, as well as the county seat, seat and largest city of Travis County, Texas, Travis County, with portions extending into Hays County, Texas, Hays and Williamson County, Texas, Williamson co ...
gun rights activist, Michael Cargill, sued ATF in 2019, in the
U.S. District Court for the Western District of Texas The United States District Court for the Western District of Texas (in case citations, W.D. Tex.) is a federal district court. The court convenes in San Antonio with divisions in Austin, Del Rio, El Paso, Midland, Pecos, and Waco. It has jur ...
, similarly challenging the authority of the agency to classify bump stocks as illegal machine guns. Cargill is also represented by the New Civil Liberties Alliance. The district court dismissed the suit in November 2020. On December 14, 2021, a unanimous three judge panel on the U.S. Court of Appeals for the Fifth Circuit upheld the ban. On June 23, 2022, the court vacated the decision and took the case en banc. Oral argument was heard on September 12, 2022. On January 6, 2023, the court ruled that bump stocks are not machineguns and reversed the district court.


Takings Clause lawsuits

In June 2018, the group Maryland Shall Issue filed a putative
class action A class action, also known as a class-action lawsuit, class suit, or representative action, is a type of lawsuit where one of the parties is a group of people who are represented collectively by a member or members of that group. The class actio ...
lawsuit in the federal district court in Maryland, challenged 2018 Maryland Senate Bill 707 which banned "rapid-fire trigger activators"; the plaintiffs alleged that the ban was an unconstitutional taking requiring
just compensation Just compensation is a right enshrined in the Fifth Amendment to the U.S. Constitution (and counterpart state constitutions), which is invoked whenever private property is taken (also in some states damaged) by the government. Usually, the gover ...
, among other challenges. In November 2018, the district court dismissed the case. In June 2020, the U.S. Court of Appeals for the Fourth Circuit affirmed the dismissal of the suit in a 2–1 vote. In May 2021, the Supreme Court declined to hear the case. Two similar lawsuits were filed in the
United States Court of Federal Claims The United States Court of Federal Claims (in case citations, Fed. Cl. or C.F.C.) is a United States federal court that hears monetary claims against the U.S. government. It was established by statute in 1982 as the United States Claims Court, ...
challenging the federal bump-stock ban—one filed by bump stock owners (McCutchen), the other by bump-stock suppliers (Modern Sportsman and RW Arms). Both were dismissed.Jake Charle
Litigation Highlight: No Compensation for Bump Stock Owners
Duke Center for Firearms Law (October 25, 2019).
In the latter case, the court held that the ATF Final Rule banning bump stocks "was promulgated pursuant to the police power to protect public safety and therefore not a compensable taking under the Fifth Amendment." Both cases were unsuccessfully appealed to the
Court of Appeals for the Federal Circuit The United States Court of Appeals for the Federal Circuit (in case citations, Fed. Cir. or C.A.F.C.) is a United States court of appeals that has special appellate jurisdiction over certain types of specialized cases in the U.S. federal court ...
. En banc petitions were denied and the Supreme Court denied review. In another case, filed in the District Court for the Northern District of Texas, the government failed to have the case dismissed, but was given another opportunity to argue so. However, the case is now stayed pending the outcome of McCutchen and Modern Sportsman. Another challenge, filed in the District Court for the Western District of Kentucky, was unsuccessful. The Sixth Circuit Court of Appeals will hear the case on January 19, 2023.


John Doe

A class action lawsuit filed in the U.S. District Court for the Southern District of Illinois seeking immunity for legal purchasers of bump stocks prior to the ATF rule change was denied by the court in June 2020. On October 31, 2022, the
United States Court of Appeals for the Federal Circuit The United States Court of Appeals for the Federal Circuit (in case citations, Fed. Cir. or C.A.F.C.) is a United States court of appeals that has special appellate jurisdiction over certain types of specialized cases in the Federal judiciary of ...
upheld the ban.


US v Alkazahg

The
Navy-Marine Corps Court of Criminal Appeals The Navy-Marine Corps Court of Criminal Appeals (NMCCA) is the intermediate appellate court for criminal convictions in the United States Navy and the Marine Corps. Courts-martial are conducted under the Uniform Code of Military Justice (Title 1 ...
ruled on September 7, 2021 that a bump stock does not fall under the definition of a machinegun. The ruling was not appealed by the government.


State lawsuits


Florida

Florida banned bump stocks in October 2018. A class action lawsuit challenging the ban as an unconstitutional taking requiring
just compensation Just compensation is a right enshrined in the Fifth Amendment to the U.S. Constitution (and counterpart state constitutions), which is invoked whenever private property is taken (also in some states damaged) by the government. Usually, the gover ...
was unsuccessful in the Leon County circuit court in May 2019 and in the 1st District Court of Appeal in January 2021.


Patent infringement suit

Slide Fire Solutions filed suit against Bump Fire Systems for infringement of its patents on bump stock designs in 2014. The suit alleged that Bump Fire Systems infringed eight US Patents, for example, United States Patent No. 6,101,918 entitled "Method And Apparatus for Accelerating the Cyclic Firing Rate of a Semi-Automatic Firearm" and United States Patent No. 8,127,658 entitled "Method of Shooting a Semi-Automatic Firearm". The suit was settled in 2016, resulting in Bump Fire Systems ceasing manufacture of the product in contention.


Other lawsuits

Survivors of the
2017 Las Vegas shooting On October 1, 2017, Stephen Paddock, a 64-year-old man from Mesquite, Nevada, opened fire on the crowd attending the Route 91 Harvest music festival on the Las Vegas Strip in . From his 32nd-floor suites in the Mandalay Bay hotel, he fired m ...
sued bump stock patent holder and manufacturer Slide Fire Solutions, claiming the company was negligent and that they deliberately attempted to evade U.S. laws regulating automatic weapons: "this horrific assault would not and could not have occurred, with a conventional handgun, rifle, or shotgun, of the sort used by law-abiding responsible gun owners for hunting or self defense." The suit was dismissed in September 2018; the court determined that the bump stocks of the sort used by gunman
Stephen Paddock Stephen Craig Paddock (April 9, 1953 – October 1, 2017) was an American mass murderer who perpetrated the 2017 Las Vegas shooting. Paddock opened fire into a crowd of about 22,000 concertgoers attending a country music festival on the Las ...
to commit the murders, were "firearm components" rather than "firearm accessories" and were therefore subject to the
Protection of Lawful Commerce in Arms Act The Protection of Lawful Commerce in Arms Act (PLCAA) is a U.S law, passed in 2005, that protects firearms manufacturers and dealers from being held liable when crimes have been committed with their products. Both arms manufacturers and dealers ...
(PLCAA), a federal law immunizing manufacturers and sellers of firearms from liability for harm "caused by those who criminally or unlawfully misuse firearm products".Order
''Prescott v. Slide Fire Solutions, LP'', U.S. District Court for the District of Nevada, September 17, 2018.


See also

* Glock Switch *
Gun politics in the United States Gun politics within American politics is defined by two primary opposing ideologies about civilian gun ownership. Those who advocate for gun control support increased regulation of gun ownership; those who advocate for gun rights oppose incre ...
*
Hell-Fire trigger A Hell-Fire trigger is a device that allows a semi-automatic firearm to fire at an increased rate. The Hell-Fire clamps to the trigger guard behind the trigger and presses a "finger" against the back of the trigger to increase the force that retu ...
*
Recoil operation Recoil operation is an operating mechanism used to implement locked breech, autoloading firearms. Recoil operated firearms use the energy of recoil to cycle the action, as opposed to gas operation or blowback operation using the pressure of the p ...
*
Slamfire A slamfire is a discharge of a firearm occurring as a cartridge is being loaded into the chamber. Some firearms are designed to slamfire, but the term also describes a malfunction of self-loading firearms. Shooters accustomed to firearms requiring ...


Notes


References

{{Firearms 2017 Las Vegas shooting Firearm actions Gun politics in the United States