S 399 New York Senate · 2025 Regular Session

Regulates pistol converters and convertible pistols

S 399 makes it illegal for most people to possess or sell "pistol converters" (devices that turn semi-automatic pistols into machine guns) or "convertible pistols" (specific semi-automatic pistols that can be easily converted using common tools like screwdrivers). The bill defines convertible pistols as those with a "cruciform trigger bar" that can be altered with household tools, excluding most standard semi-automatic pistols. It criminalizes selling or transporting convertible pistols (a class D felony), with exemptions for police, military personnel, and licensed gunsmiths. The law aims to prevent easy conversion of standard firearms into automatic weapons under state law.
Bill status in committee 1 of 4 stages cleared
Introduction
Jan 2025
Committee Review
Floor Vote
Governor
Introduced Jan 8, 2025 Last action Apr 27, 2026
Maddy AI version diff · 2 comparisons

What changed between versions

S399A S399B · 5 edits
MODERATE
This bill updates the legal definitions of 'convertible pistols' and 'pistol converters' to clarify how these weapons are identified and regulated. It also expands the authority of the State Police to publish an official list of specific convertible pistol models, ensuring clearer enforcement standards.
Scope change
The bill's scope remains focused on regulating convertible pistols, but the definitions and enforcement mechanisms have been broadened and clarified.
DEFINITION

The definition of a 'convertible pistol' was changed from requiring a 'cruciform trigger bar' to allowing conversion by 'readily altering' the trigger bar, which broadens the scope of weapons considered convertible.

A new definition for 'cruciform trigger bar' was added to explain its specific mechanical function, providing context for the altered definition of convertible pistols.

The exclusion criteria for non-convertible pistols were simplified by removing references to 'striker-fired' mechanisms and replacing them with a general exclusion for 'hammer-fired semi-automatic pistols'.

The list of common household tools used to convert pistols was updated to include 'rotary tools' and reorganized for clarity.

ENFORCEMENT

The State Police superintendent is now required to publish an annual list of pistols determined to be convertible, creating a specific administrative mechanism for identifying regulated items.

Floor votes

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Full legislative history

Actions timeline

Total actions
9
Key actions
3
Committee
3
Amendments
3
Apr 27, 2026
Upper · Passed
PRINT NUMBER 399B
upper
Apr 27, 2026
Upper · Passed
AMEND AND RECOMMIT TO CODES
upper
Jan 7, 2026
Committee
REFERRED TO CODES
upper
Jun 13, 2025
Committee
COMMITTED TO RULES
upper
Jun 9, 2025
Upper · Passed
AMENDED ON THIRD READING 399A
upper
Jan 8, 2025
Committee
REFERRED TO CODES
upper
1 primary · 28 co-sponsors

Sponsors