Sen. Kyrsten Sinema (I-AZ) voted against blocking the ATF’s AR-pistol stabilizer brace rule Thursday although she was elected to office by the most gun-friendly state in the Union.

The ATF’s rule requires owners of AR-pistols with a stabilizer brace to register them under the National Firearms Act (1934) or avail themselves of a limited number of options outlined by the ATF:

This rule is effective the date it is published in the Federal Register.  Any weapons with “stabilizing braces” or similar attachments that constitute rifles under the NFA must be registered no later than 120 days after date of publication in the Federal Register; or the short barrel removed and a 16-inch or longer rifle barrel attached to the firearm; or permanently remove and dispose of, or alter, the “stabilizing brace” such that it cannot be reattached; or the firearm is turned in to your local ATF office. Or the firearm is destroyed.

The House passed a resolution to block the rule on June 13, 2023, and on Thursday, as the Senate voted on the resolution, Sinema cast a “no” vote.

Gun Owners of America tweeted:

In 2020, Guns & Ammo magazine ranked Arizona the most gun-friendly state in the Union from 2013-2020 and recognized the state in a five-way tie for number one in 2022.

Sinema voted against blocking a rule that forces Arizonans to register or otherwise comply with ATF mandates on their stabilizer braces.

AWR Hawkins is an award-winning Second Amendment columnist for Breitbart News and the writer/curator of Down Range with AWR Hawkins, a weekly newsletter focused on all things Second Amendment, also for Breitbart News. He is the political analyst for Armed American Radio and a Turning Point USA Ambassador. He was a Visiting Fellow at the Russell Kirk Center for Cultural Renewal in 2010, a speaker at the 2023 Western Conservative Summit, and he holds a Ph.D. in Military History, with a focus on the Vietnam War (brown water navy), U.S. Navy since Inception, the Civil War, and Early Modern Europe. Follow him on Instagram: @awr_hawkins. You can sign up to get Down Range at breitbart.com/downrange. Reach him directly at awrhawkins@breitbart.com.