Authorities were unable to locate and seize the firearm, which is registered in her name.
At the time of Locklear's arrest, a police spokesperson told E! News in a statement she was "uncooperative" and "battered" the responding deputies. The 56-year-old claimed she had been "battered or injured" prior to their arrival, and was later transported to a hospital for evaluation "out of an abundance of caution."
Last year, when reports surfaced that Locklear had entered rehab for a fifth time, she told E! News, "I am feeling great and am taking steps to enrich and better my life. Currently I am working on tying up some loose ends regarding certain issues so I can hit 2017 full steam ahead."
E! News has reached out to her rep for comment.
TMZ was first to report the news.
—Reporting by Alli Rosenbloom
(This story was originally published Wednesday, March 7, 2018 at 3:07 a.m. PST)