Governor Newsom signed AB 1127 into law in October 2025, and its effects are now being felt across California gun shops. The bill targets what it calls "semiautomatic machine-gun convertible pistols" -- a category that captures virtually every Glock model currently on California's Roster of Certified Handguns. If you own a Glock or were planning to buy one in California, here is exactly what this law does, when it takes effect, and what your options are.

What AB 1127 Actually Does

AB 1127 adds a new category of prohibited firearm to the California Penal Code: the "semiautomatic machine-gun convertible pistol." The law defines this as any semiautomatic pistol with a cruciform trigger bar that can be readily converted into a machine gun by installing a device (commonly called a "Glock switch" or "auto sear") as a replacement for the slide's back plate, without any additional machining or modification of the trigger mechanism.

The cruciform trigger bar is a cross-shaped metal component inside the trigger assembly. It is the standard design in all Glock pistols and many Glock-pattern clones, including models from Polymer80, Shadow Systems, and similar manufacturers. The law does not target a specific brand by name, but the cruciform trigger bar design is functionally synonymous with the Glock platform.

Two-Phase Implementation Timeline

AB 1127 rolls out in two phases:

Phase 1: January 1, 2026 -- Inventory Freeze

As of January 1, 2026, licensed firearms dealers are prohibited from acquiring new inventory of any pistol that meets the "convertible pistol" definition. Dealers may continue selling pistols they acquired before this date. This creates a dwindling supply of roster-legal Glocks in California gun shops. Once existing dealer inventory is gone, no new supply can enter the retail pipeline.

Phase 2: July 1, 2026 -- Sales Ban

Beginning July 1, 2026, all dealer sales of convertible pistols to the general public are prohibited, regardless of when the dealer acquired inventory. This is the hard cutoff. After this date, you will not be able to purchase a new Glock or cruciform-trigger-bar pistol from any California FFL dealer.

Which Guns Are Affected

The law affects any pistol with a cruciform trigger bar. In practice, this includes:

  • All Glock models currently on the California roster -- Glock 17 Gen 3, Glock 19 Gen 3, Glock 26 Gen 3, Glock 34 Gen 3, and others
  • Glock-pattern clones -- Shadow Systems, Lone Wolf, and any other manufacturer using the cruciform trigger bar design
  • Polymer80 and similar frames -- Already heavily restricted in California, but now explicitly covered

The law does not affect pistols that use different trigger mechanisms. Smith & Wesson M&P pistols, SIG Sauer P320/P365, Springfield Armory XD series, CZ pistols, Beretta 92 series, and 1911-platform handguns all use different internal designs and are not impacted by AB 1127.

How the California Handgun Roster Works

California maintains a Roster of Certified Handguns under PC 32000. Only handguns that pass drop-safety testing and meet specific design requirements (including a loaded chamber indicator and magazine disconnect safety for semi-autos added after 2006) may be sold by dealers to the general public. The roster has been shrinking for years because the microstamping requirement added in 2013 has prevented virtually all new models from being added.

AB 1127 goes further than the roster. Even though several Glock models are currently roster-approved, the new law overrides that approval by banning the sale of any pistol meeting the convertible definition. Being on the roster no longer protects these models from the sales prohibition.

Exemptions

AB 1127 includes several exemptions:

  • Law enforcement and military -- Active law enforcement officers and military personnel remain exempt and may continue purchasing Glock pistols through their agencies
  • Private party transfers -- The law restricts dealer sales. Existing Glocks already owned by California residents may still be transferred through private party transactions (PPT) conducted through a licensed dealer, provided the firearm is not otherwise prohibited
  • Current owners -- If you already own a Glock, you are not required to surrender, modify, or register it. Possession remains legal
  • Manufacturer retesting -- Manufacturers have until January 1, 2027, to submit modified versions of previously approved pistols for retesting, potentially with redesigned trigger mechanisms that avoid the cruciform bar design

Legal Challenges

Multiple lawsuits have already been filed challenging AB 1127. The Second Amendment Foundation (SAF) and the National Rifle Association (NRA) both filed federal lawsuits in October 2025, arguing that the law is an unconstitutional restriction on commonly owned firearms. These cases are in early stages and will likely take years to resolve. In the meantime, the law remains in effect.

What You Should Do Now

If you want a Glock or cruciform-trigger-bar pistol in California, the window is closing. Here is a practical timeline:

  • Before July 1, 2026 -- Purchase from a dealer that still has pre-January 2026 inventory. Supply is limited and shrinking. Prices have already increased at many retailers.
  • After July 1, 2026 -- Your only option for acquiring a Glock will be through private party transfers of pistols already in California. Expect PPT prices to rise significantly.
  • Consider alternatives -- If you want a reliable striker-fired pistol, look at models that do not use a cruciform trigger bar. The Smith & Wesson M&P Shield (on roster), SIG Sauer P226/P229 (on roster), and various CZ models remain available and unaffected.

The Bigger Picture

AB 1127 is part of a broader package of California firearms legislation signed in 2025. Combined with AB 1078 (the three-firearm purchase limit) and ongoing roster attrition, the practical selection of handguns available to California residents continues to narrow. Whether the courts will intervene remains an open question, but gun owners should plan based on the law as it stands today -- not on hoped-for legal outcomes.

Check the Full 2026 Law Tracker

AB 1127 is one of several new laws taking effect this year. See the complete timeline of 2026 California firearms law changes.

View Law Tracker

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