WASHINGTON — Suspended Washington Wizards star Gilbert Arenas was ordered Friday to spend 30 days in a halfway house for his conviction on gun charges stemming from a locker-room confrontation with a teammate.

District of Columbia Superior Court Judge Robert E. Morin also sentenced Arenas to 400 hours of community service, which cannot be conducted at basketball clinics, and a $5,000 fine.

Arenas apologized in court, saying, "Every day, I wake up wishing it did not happen."

Arenas pleaded guilty to violating the city's gun laws in a Dec. 21 incident at Verizon Center. Following an argument over an unpaid gambling debt totaling a few hundred dollars, Arenas brought several guns to the team locker room and set them near Javaris Crittenton's locker with a sign telling him to "PICK 1."

"The evidence is that both of you felt disrespected," Morin told Arenas. "Rather than acting like mature adults, you escalated the incident" by bringing guns to practice.

After sentencing, Arenas' lawyer, Ken Wainstein, said he was pleased with the outcome.

"Judge Morin's decision was fair and measured; it reflected a deep understanding of the relevant facts ... Mr. Arenas is grateful to the court and looks forward to serving the community and once again being a force for good in the District of Columbia," Wainstein said in a statement.

In court papers, prosecutors said Crittenton had a legitimate reason to believe Arenas' threat was genuine.

Prosecutors had wanted Arenas to go to jail for at least three months. They said he lied repeatedly about why the guns were in the locker room and tried to cover up what had happened. They also said he knew bringing guns into D.C. was illegal and has a prior gun conviction.

Assistant U.S. Attorney Christopher Kavanaugh wrote in court papers that "if any other individual — without the fame, power, and the wealth of this defendant — brought four firearms into Washington, D.C., for the purpose of a similar confrontation," they would surely go to jail.

Arenas' lawyers sought probation and community service, arguing the incident was a misguided prank with no intention to harm anyone. They pointed out that the guns were unloaded, that Arenas' lighthearted comments about the incident were misinterpreted, and that he's a good role model who excelled at community service.

"This sad saga has sent a strong message to any and all who might consider bringing guns into the district," defense attorneys wrote.

Arenas' sentence could determine whether the Wizards will attempt to void the remainder of his six-year, $111 million contract, although the players' union has vowed to fight such a move.

Regardless, Arenas' misdeed has helped contribute to the precipitous decline of a franchise, which is headed for its second consecutive last-place finish after years of regularly reaching the playoffs.

The Wizards did not address Arenas' future with the team in a statement later Friday.

"We believe today's sentencing of Gilbert Arenas can help bring closure to the unfortunate situation that has played out over the last three months," said the statement issued by president Ernie Grunfeld and the Pollin family that owns the team.

"Gilbert has admitted his mistakes and will now pay his debt to our community ... we now look forward to moving on and focusing on building this team into the contender that our outstanding fans deserve."

The maximum term for Arenas' crime is five years. Sentencing guidelines for someone with his record call for six months to two years, although those guidelines also allow for probation.

There has been little dispute about the facts of the case.

Arenas and Crittenton had argued over a card game and exchanged threats while the team flew home from a road game Dec. 19. Two days later, Arenas brought his guns to the locker room. Crittenton then retrieved his own gun and showed it to Arenas.

Crittenton pleaded guilty in January to a misdemeanor gun charge and received a year of unsupervised probation.

Arenas entered his guilty plea Jan. 15.

In sentencing Arenas, Morin said he took into account the fact that Crittenton only received probation and he believed Arenas was remorseful.