Monday, May 11, 2026

The “Accessory” Gambit: Why the Eleventh Circuit’s Mechanical Logic Fails the Second Amendment

By Sean Maloney, Esq.

Machinegun conversion device / “Glock switch” examples shown in an ATF/DOJ fact sheet. Image cropped and composited from DOJ/ATF source material.
Machinegun conversion device / “Glock switch” examples shown in an ATF/DOJ fact sheet. Image cropped and composited from DOJ/ATF source material.

In the recently published decision of United States v. Alsenat (2026), the Eleventh Circuit Court of Appeals affirmed a conviction involving Machine Gun Conversion Devices (MCDs), specifically “Glock switches.” The panel rested its holding on the claim that machineguns are not protected arms in common lawful use. However, the district court also accepted the government’s fallback theory that unattached conversion devices are mere “accessories” or “accoutrements,” not protected “Arms.”

That accessory framing should alarm gun owners.

To the casual observer, this may seem like a minor semantic point. To a firearm attorney, it is a transparent attempt to deconstruct the Second Amendment by its parts.

As one of the attorneys who represented the Buckeye Firearms Association in our successful suit against the City of Cincinnati regarding their bump stock ban, I have seen this “accessory gambit” before. It failed in Ohio, and it should fail in the federal courts as well.

Lessons from Buckeye Firearms Association v. City of Cincinnati

When Cincinnati attempted to bypass Ohio’s firearm preemption law (R.C. 9.68) to ban bump stocks, their primary legal tactic was to argue that a bump stock was a mere “accessory” and not a “component” or “part” of a firearm. They believed that by changing the label, they could evade the state’s “uniform laws” mandate.

Our legal team challenged this head-on. We argued that a device that interacts with the fire-control group to enable a specific cycle of fire is, by definition, part of the firearm. The Court of Common Pleas agreed, and the First District affirmed, providing a definitive rebuke to the City’s logic. The court recognized a fundamental truth: you cannot regulate the function of an arm by arbitrarily declaring its internal timing and fire-control components to be “accessories.” The ruling stated clearly that components like a bump stock are included within the definition of “firearms.”

The Mechanical Truth of the Glock Switch

The Alsenat court pretends a machinegun conversion device is a bolt-on trinket, leaving the base pistol untouched. That’s fiction in engineering; function defines firearm components. The switch replaces the factory slide cover plate, a static cover in stock form. Once installed, it transforms that “spot” into the active sear and striker-timing mechanism.

If you extract it from a tuned setup, you are left with a gutted slide, an inert striker, and a brick. This brings us to the point that you can’t call a heart an “accessory” to a human body just because it can be transplanted. Similarly, you shouldn’t call a sear or a timing mechanism an accessory just because it can be swapped. By any “Mechanical Essentiality Test,” the part is integral: absent the part, the configured arm fails to operate as intended. If a part is necessary for the firearm to function in its current configuration, that part is the firearm.

Deconstructing the “Arm”

The heart of the Alsenat error lies in the definition of a “Fire Control Group” (FCG). In any machine, the parts that maintain synchronization, like the timing belt in an engine are internal components, not optional decorations. By labeling the component that dictates the timing and release of the striker as an “accessory,” the court suggests that a firearm’s most vital “organs” can be stripped of constitutional protection.

If the courts are permitted to redefine integral fire-control components as “accessories,” they grant the government the power to deconstruct any modern firearm into a series of “unprotected” pieces. Under this logic, a trigger assembly, a bolt carrier group, or even a barrel could be reclassified as an “accessory” to circumvent the Second Amendment.

The Constitutional Sleight-of-Hand

The Eleventh Circuit used Heller’s “dangerous and unusual” idea to avoid checking the real mechanics of Glock switches. It is a convenient shortcut. Instead of engaging with the rigorous history-and-tradition test established in Bruen, the court relied on wordplay.

If the Supreme Court seeks to reverse Alsenat, it cannot rest on a faulty mechanical foundation alone. The Court must ground its reasoning in Bruen’s history or Heller’s core protections, unmasking the “accessory” label as constitutional sleight-of-hand. Rahimi and Bruen require the government to show a historical analogue for such bans, not just a clever new vocabulary.

Conclusion

Cincinnati proved it: parts that make a gun work aren’t add-ons; they’re the gun. Law must match how guns actually function.

When a court calls a firing mechanism an “accessory,” it isn’t just misinterpreting engineering—it is eroding the very definition of the “Arms” we have a right to keep and bear.

ATF Revised Machine Gun Definition Does Not Go Far Enough


About Sean Maloney

Sean Maloney is a criminal defense attorney, co-founder of Second Call Defense, and an NRA-certified firearms instructor. He is a nationally recognized speaker on critical topics, including the Second Amendment, self-defense, the use of lethal force, and concealed carry. Sean has worked on numerous use-of-force and self-defense cases and has personally trained hundreds of civilians to respond safely and legally to life-threatening situations. He is a passionate advocate for restoring the cultural legitimacy of the Second Amendment and promoting personal responsibility in self-defense.

Sean Maloney




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