The gun confiscation agenda is spreading.
Just months after California pushed the envelope with laws targeting so-called “convertible firearms,” Maryland lawmakers are now following suit, advancing legislation that effectively bans the future sale of many of the most popular handguns in America.
And while politicians insist it’s about public safety, the scope of the bill tells a very different story.
At the center of the push is House Bill 577, which targets what lawmakers call “machine gun convertible pistols.”
Beginning in 2027, the bill would make it illegal to manufacture, sell, purchase, or transfer these firearms in Maryland, cutting off access to entire categories of commonly owned handguns.
“Convertible” Gun Ban Targets Some of the Most Popular Firearms in America
The bill never says the word “Glock.”
It doesn’t have to.
Instead, lawmakers crafted a technical definition focused on internal components and the ability to convert a firearm using basic tools.
On paper, it sounds narrow. In reality, it lands squarely on one of the most widely used handgun platforms in the country.
Glock pistols, including models like the Glock 17, 19, 26, and 45, fit that definition almost perfectly.
So do the countless Glock-pattern pistols built on the same internal design, including firearms from Shadow Systems, PSA, Polymer80, Zev Technologies, and others.
These are not niche products. They are among the most commonly owned firearms in America, widely used for personal defense, professional duty, and everyday carry.
Depending on how Maryland regulators interpret the law, the impact could stretch even further.
Other striker-fired platforms, such as the Smith & Wesson M&P series, SIG Sauer P320, and Springfield Armory XD line, could also face scrutiny if they are deemed “readily convertible.”
What’s being proposed isn’t a narrow restriction.
It’s a sweeping limitation on modern semi-automatic handguns.
The Justification: Illegal Devices That Are Already Banned
The entire argument behind the bill rests on so-called “Glock switches,” small conversion devices that can make certain pistols fire automatically.
But there’s a fundamental problem with that rationale.
Those devices are already illegal under federal law: they are classified as machine guns under the National Firearms Act, and possession alone carries severe penalties.
In other words, the conduct Maryland lawmakers are citing is already prohibited.
Rather than focusing on enforcement, the bill shifts the burden onto the firearms themselves, restricting law-abiding citizens instead of addressing criminal misuse.
Manufacturers have already attempted to respond to the controversy.
Glock’s newest designs were widely believed to include changes intended to make these types of conversions more difficult.
But almost immediately, reports surfaced that workarounds were developed to bypass those modifications.
From “Convertible” Pistols to Broader Restrictions
California laid the groundwork for this strategy.
Now Maryland is building on it.
By focusing on the idea of “convertibility,” lawmakers can justify regulating an entire class of firearms based on a rare and already illegal modification.
Critics argue that this approach allows regulators to move beyond targeting specific devices and toward restricting the underlying platforms themselves.
Once that framework is established, the line between “convertible” firearms and commonly owned semi-automatic handguns becomes increasingly thin.
Texas Gun Rights President Chris McNutt says the strategy is clear:
“This was never about ‘Glock switches’ — those are already illegal. This is about using a criminal loophole as an excuse to go after some of the most commonly owned handguns in America. If they can label a Glock ‘convertible,’ they can label almost anything. And once that door is open, nothing is off limits.”
A Policy Fight With National Implications
What’s happening in Maryland is not happening in isolation.
It reflects a broader shift in how firearm regulations are being developed, moving away from outright bans toward more technical definitions that can be applied to widely owned platforms.
And as similar proposals emerge in other states, the outcome of this debate could shape the future of firearm policy well beyond Maryland.
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