Maryland has quietly turned one of America’s most popular self-defense handguns into contraband for future buyers, and gun-rights groups are racing to stop what they call a backdoor handgun ban.
Story Snapshot
- Maryland’s new law bans future sales and transfers of most Glock and Glock-style pistols by labeling them “machine gun convertible.”[2]
- The National Rifle Association (NRA), Firearms Policy Coalition, and Second Amendment Foundation have filed a federal lawsuit arguing the ban violates the Second Amendment.[2][3][4]
- Lawmakers admit the guns are being targeted not for how they are normally used, but for how criminals might illegally modify them.[1][2]
- Current owners can keep their pistols, but starting in 2027 Marylanders will be barred from buying, selling, or transferring most Glock handguns in the state.[2][5]
Maryland Redefines Common Handguns as “Machine Gun Convertible Pistols”
Maryland Governor Wes Moore signed Senate Bill 334 to amend state criminal law so that, starting January 1, 2027, no one may manufacture, sell, offer for sale, purchase, receive, or transfer what the statute calls a “machine gun convertible pistol.”[2][3][5] The law defines that term as any semiautomatic pistol with a cruciform trigger bar that can be readily converted into a machine gun by installing a “pistol converter” in place of the slide’s backplate.[2] The legislature specifically excludes traditional hammer‑fired pistols and striker‑fired pistols that lack this cruciform trigger design.[2][3]
According to the NRA’s description, that seemingly technical definition “in effect…bans nearly every Glock and Glock-style pistol on the market,” because those models use the very trigger mechanism the statute targets.[2] A local report likewise explains that lawmakers are aiming at semiautomatic handguns with this design that can be converted using a particular converter device, while Maryland State Police are expected to publish an official list of affected models.[3] As written, the law focuses on future commercial activity and does not order immediate confiscation of guns already owned.[2][3]
Gun-Rights Lawsuits Argue This Is an Unconstitutional Handgun Ban
The National Rifle Association, Firearms Policy Coalition, and Second Amendment Foundation responded almost immediately, filing a federal lawsuit titled “National Rifle Association of America v. Moore” in the United States District Court for the District of Maryland.[2][3][4][5] Their case argues that Maryland’s Glock ban violates the Second Amendment because it outlaws the sale and transfer of many of the most popular handguns in America, which ordinary citizens use every day for self-defense.[2][4] The NRA highlights Supreme Court precedent from District of Columbia v. Heller, which holds that firearms “in common use” cannot be banned and that categorical handgun bans are unconstitutional.[2]
The Second Amendment Foundation’s summary stresses that the statute’s text makes clear the state is not just prohibiting illegal conversion devices; it forbids people from manufacturing, selling, purchasing, receiving, or transferring an entire class of semiautomatic pistols.[3][4] Firearms Policy Coalition describes the case as a straightforward challenge to a state law that singles out Glock-platform pistols precisely because they are widely owned and effective for lawful carry, home defense, and competitive shooting.[4] Together, these groups are asking the court to block enforcement before the 2027 effective date, warning that compliant dealers and law-abiding gun owners will otherwise face criminal penalties for ordinary transactions.[2][3][4]
Public-Safety Justification Centers on Criminal Conversion, Not Lawful Use
Maryland officials and allied activists justify the new law by pointing to a broader campaign accusing Glock of fueling the spread of illegal machine guns through the company’s pistol design.[1][3] In a separate 2025 lawsuit, the State of Maryland and the City of Baltimore, represented by Everytown Law and others, sued Glock for allegedly manufacturing and selling semiautomatic pistols that can “easily be converted to illegal machine guns with an auto sear,” often called a “Glock switch.”[1] That civil complaint claims this design choice has foreseeably harmed public health and safety, especially in Baltimore, by enabling criminals to fire at rates comparable to military automatic weapons.[1]
FPC, NRA, SAF, File Lawsuit Against Maryland Glock Ban https://t.co/UYbr669AVT via @BreitbartNews
— Alan Kopke (@kopkealan) May 27, 2026
Supporters of Senate Bill 334 now rely on that same framing, arguing that Glock-style pistols are uniquely susceptible to illegal conversion, which they say justifies regulating the platform itself rather than only the already banned conversion parts.[1][3] Yet the law’s focus confirms what gun-rights advocates have warned about for years: politicians are willing to burden millions of law-abiding citizens because a criminal minority might break existing laws with aftermarket gadgets. The statute does not punish the person who installs a converter on a pistol; it cuts off future access to the underlying handguns that most owners will never misuse.[2][3][4]
What This Means for Maryland Gun Owners and the National Second Amendment Fight
For Maryland residents, the practical impact is clear: if courts do not intervene, you may keep your Glock, but you will not be able to buy another one, sell the one you own to a friend, or pass it down within the state after January 1, 2027.[2][3][5] Dealers will be forced to pull some of the most trusted concealed-carry and home-defense pistols from their shelves, while criminals who already ignore gun laws will continue seeking illegal conversion devices through black markets. Nothing in the record presented so far shows that lawful purchasers are the primary source of conversion crimes or that banning future civilian sales of Glocks will stop those bad actors.[1][3]
Nationally, Maryland’s move fits a growing pattern: state governments, especially those run by Democrats, are experimenting with “convertibility” bans that treat design features like Glock’s cruciform trigger bar as a reason to outlaw otherwise ordinary semiautomatic firearms.[1][2][3][4] Gun-rights groups counter with “common use” arguments, emphasizing that if officials can rebrand a popular handgun as a “machine gun convertible pistol” today, they can move on to other platforms tomorrow.[2][4] With the case landing in the United States Court of Appeals for the Fourth Circuit if appealed, many conservatives expect an uphill legal fight, but the outcome will shape how far blue states can go in using technical definitions to sidestep the Supreme Court’s clear warning against handgun bans.[2][4]
Sources:
[1] Web – Gun Rights Groups Rush to Court After Maryland Bans Glocks
[2] Web – Baltimore and Maryland Sue Glock for Harming … – Everytown Law
[3] Web – NRA Files Lawsuit Challenging California’s Glock Ban
[4] Web – Maryland lawmakers on course to ban sale of Glocks and ‘machine …
[5] Web – SAF FILES LAWSUIT CHALLENGING NEWLY SIGNED MARYLAND …
