Bump Stocks are NOT Machineguns, Rate of Fire is Irrelevant

Bump stocks are not machine guns. Not only are they not machine guns in the legal definition, but they are significantly different from machine guns in other ways as well.

In the recent Supreme Court decision on Garland v Cargill, Justice Clarance Thomas wrote:

A semiautomatic rifle equipped with a bump stock is not a “machinegun” as defined by §5845(b) because: (1) it cannot fire more than one shot “by a single function of the trigger” and (2) even if it could, it would not do so “automatically.”

Far left VOX claimed Thomas was lying. From Vox.com:

The six Republican justices handed down a decision on Friday that effectively legalizes civilian ownership of automatic weapons. All three of the Court’s Democrats dissented.

In fairness, Ian Millhiser at Vox goes on to explain the arguments on both sides of the decision. Ian’s blind spot is in equating the rate of fire with the definition of a machine gun. This is the argument put forward by the leftist justices. Ian incorrectly states it is illegal to own machine guns.

Machine guns are not defined in the law or in a practical sense by rate of fire. Simple skill can produce rates of fire in a revolver at the levels of common machine guns.

As Justice Clarence Thomas notes on page 12 of the opinion: “A bump stock does not convert a semi-automatic rifle into a machinegun any more than a shooter with a lightning-fast trigger finger does.”

As noted in one of the lawsuits challenging the ATF administrative rule banning bump stocks, Jerry Miculek has demonstrated shooting a revolver at a faster rate than bump stocks generally do, at eight shots per second, or 480 shots per minute.  As noted in the legal brief:

Thus, as individuals can achieve, with greater accuracy, faster cyclic rates than those utilizing bump-stock-devices, the underlying premise of this proceeding is completely arbitrary and capricious.

Any law banning items based on a rate of fire would ban common revolvers and all semi-automatic firearms because all can be fired at the same rate of fire without a bump stock as with a bump stock. Because bump stocks typically move the trigger finger much further than is necessary with an ordinary semi-auto, the rate of fire with a bump stock will be less than that of a person with a “lightning-fast trigger finger.”

In specific, carefully controlled situations, semi-autos equipped with bump stocks can attain the same rate of fire as machine guns. So can people who train to fire semiautomatic rifles rapidly. During oral arguments in Garland v Cargill on February 28, 2024, Justice Barrett said she watched all the videos explaining what bump stocks did and how they worked. Justice Barrett knew bump firing could be easily done without a bump stock. From the oral argument transcript, page 11:

JUSTICE BARRETT: Mr. Fletcher, so I did watch all of these videos and try to figure out exactly what this looks like. And I just want to ask you about this bump-firing thing.

Simple rate of fire does not make a machine gun effective. To be effective, a machine gun has to be controllable. Semi-autos equipped with bump fire stocks are more difficult to control than machine guns.  Bump fire stocks are less reliable than machine guns.  Because bump stocks require a relatively complex balancing of tensions by the operator, they are far less reliable in practice than a machine gun.  If you had a choice between having an opponent armed with a machine gun or a semi-automatic equipped with a bump-fire stock, the obvious preference is for them to be equipped with a bump stock, as the chances of malfunction are much greater.

Bump stocks are not as accurate as machine guns. Because the bump stock introduces movement in the stock of the firearm and requires a balance of tensions by the shooter instead of a simple activation of the trigger, bump stocks are inherently less accurate.

Currently, the reason machine guns are not as protected by the Second Amendment as semi-automatic firearms is that semi-automatic firearms have been in common use in the United States for over a century. They are ubiquitous, as Justice Sotomayor mentioned in the dissent of Garland v Cargill (bold added):

He did so by affixing bump stocks to commonly available, semiautomatic rifles.

Semiautomatic rifles are commonly available. Machine guns are not. Guns that are commonly available (in common use for lawful purposes) are protected by the Second Amendment.

This does not mean machine guns are not protected by the Second Amendment. The argument was never presented in the Cargill case. The Cargill case was about whether the ATF had the legal authority to change the law.  If, however, bump stocks are “machine guns” then machine guns are in common use; and machine guns are therefore protected by the Second Amendment.

This does not mean progressive judges will accept the Second Amendment at face value. Progressives look at outcomes they want, not at what the law says.  If the country ends up with a Progressive court sometime in the future, they will ignore the Second Amendment again, or define it out of existence.

The wording of Justice Sotomayor will be used in future legal actions to show even a progressive justice, on the record, admits semiautomatic firearms are commonly available.


About Dean Weingarten:

Dean Weingarten has been a peace officer, a military officer, was on the University of Wisconsin Pistol Team for four years, and was first certified to teach firearms safety in 1973. He taught the Arizona concealed carry course for fifteen years until the goal of Constitutional Carry was attained. He has degrees in meteorology and mining engineering, and retired from the Department of Defense after a 30 year career in Army Research, Development, Testing, and Evaluation.

Dean Weingarten

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Bill B

If any of the ATF cowards ever decided to do a “no knock” on Jerry and hear the beep of a shot timer they wouldn’t know whether to SH*T their pants or PRAY like a man headed to the gallows. These cowards are brave against an average Joe but if their bosses said we’re no knocking Jerry Michulec they would immediately call in sick or would become ill and need to go home.
#ATFCHICKENSHITS

DIYinSTL

Dean, machine guns ARE commonly available. They’re just not commonly affordable.

swmft

there have been people that could fire a single action army faster than any common machine gun

Ledesma

Imagine the daily terror liberals must experience? Living in constant fear of machinegun attack.

Arizona

Machine guns are protected under the 2nd, which chains the government, and prohibits all government entities from infringing (limiting or restricting) the right of the People to keep and bear arms. Congress has no authority to limit our choice of arms. Nfa was admittedly unconstitutional by the DA during senate debate 1934.

Arizona

 “The citizen has, at all times, the right to keep the arms of modern warfare, and to use them in such manner as they may be capable of being used, without annoyance and hurt to others, in order that he may be trained and efficient in their use.” Andrews v State 1871 “This [the right to arms] is not a right granted by the Constitution. Neither is it in any manner dependent upon that instrument for its existence. The Second Amendment declares that it shall not be infringed; but this, as has been seen, means no more than that it shall not… Read more »

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