Last reviewed October 31, 2026
Current Status (2026)
Federal law treats a pistol with a stabilizing brace as a pistol. ATF’s 2023 rule that reclassified most braced pistols as short-barreled rifles was vacated by a federal court in Texas in 2024, the government ended its appeals in 2025, and in 2026 ATF proposed removing the brace criteria from its regulations. Shouldering a brace is not a federal crime. Some states regulate braced pistols separately, so check state law.
Detailed History
History, so far..
- The Official Text (on FederalRegister.gov)
Objective Factors for Classifying Weapons with “Stabilizing Braces”
– Link
– .pdf copy - Comment Form (on Regulations.gov)
Alcohol Tobacco Firearms and Explosives Bureau (ATF) Notice
– Link
- 2012 1st Brace – Letter
– SBTactical
– exclusive agreements with SIG SAUER & Century Arms - 2013
– Sig Brace
– SB-47 Stabilizing Brace – Century Arms PAP M92 PV Pistol - 2014
– March 5 ATF approval letter that declared it was legal
to shoulder an AR-15 pistol equipped with the SIG Brace - 2015
– Jan ATF issued an “Open Letter” claiming that using the arm brace as a
shoulder stock was a “redesign” of the pistol as an SBR - 2016
– Oct 3 Gear Head Works Tailhook Mod 2 – Letter - 2017
– Jan 12 Gear Head Works Tailhook Mod 1 – Letter
– March 21 – ATF reversed the position of the 2015 open letter
– Oct 3 – KAK Shockwave Blade Stabilizer 2.0 – Letter - 2018
– OAL measured with brace folded ??
– Maxim PDW Pistol Brace
– Nov 12 – SB Tactical FS1913
– SBTactical – SOB47
– SBTactical – SBPDW
– Strike Industries AR Pistol Stabilizer - 2019
– SBTactical – SBA4 Brace
– ATF issued ‘final’ memorandum = OK to shoulder Braces - 2020
– June U.S. Rep. Matt Gaetz – Warning of ATF action
– Recover Tactical 20/20 Arm Brace - 2021
– ???
Resources
- Reading all 15 pages of the ATF Pistol Brace Letter
– No Commentary
https://www.youtube.com/watch?v=pVY7_b4cfUM - BREAKING: ATF to Issue Guidance on “Stabilizing Braces”
Dec 16, 2020 by Firearms Policy Coalition
https://www.firearmspolicy.org/atf-to-issue-guidance-stabilizing-braces - ATF TO INSTITUTE RULEMAKING/GUIDANCE REGARDING STABILIZING BRACES AND REQUIRE REGISTRATION OF CURRENTLY OWNED BRACES
Dec 16, 2020 by Joshua Prince, Esq.
https://blog.princelaw.com/2020/12/16/atf-to-institute-rulemaking-regarding-stabilizing-braces-and-require-registration-of-currently-owned-braces/ - ATF & Stabilizing Braces Hunters, Fudds, Jocks & Operators UNITE
Dec 20, 2020 (117 views)
2015, There was a Comment Period like this one for a proposed
Import Ban on M855 Ammo Ban
Notice to those Commenting on
the Armor Piercing Ammunition Exemption Framework
Thank you for your interest in ATF’s proposed framework for determining whether certain projectiles are “primarily intended for sporting purposes” within the meaning of 18 U.S.C. 921(a)(17)(C). The informal comment period will close on Monday, March 16, 2015. ATF has already received more than 80,000 comments, which will be made publicly available as soon as practicable.
Although ATF endeavored to create a proposal that reflected a good faith interpretation of the law and balanced the interests of law enforcement, industry, and sportsmen, the vast majority of the comments received to date are critical of the framework, and include issues that deserve further study. Accordingly, ATF will not at this time seek to issue a final framework. After the close of the comment period, ATF will process the comments received, further evaluate the issues raised therein, and provide additional open and transparent process (for example, through additional proposals and opportunities for comment) before proceeding with any framework.
Manufacturers
The Official Text (on FederalRegister.gov)
Objective Factors for Classifying Weapons with “Stabilizing Braces”
– Link
– .pdf copy
2A Laws in the USA
Across the Gun Websites Network
- AR15 Pistols AR15 Buyers Guide.com
- NFA Laws Today NFA Buyers Guide.com