The ATF has official entered the Pistol Brace Rule into the Federal Registry as of today, January 31, 2023. This means that the 120-day “grace period” for registering pistol/pistol brace configurations as short barreled rifles under the National Firearms Act (NFA) without paying the $200 tax stamp begins today.
Essentially your chance to register your common pistol on a national gun registry without paying their tax begins today.