▶ Watch Video: CBSN Washington — President Biden is set to unveil his first attempts to curb gun violence on Thursday, announcing a set of modest moves designed to begin revamping federal gun policy by tweaking the government’s definition of a firearm and more aggressively responding to urban gun violence. Mr. Biden on Thursday is also set to nominate David Chipman, a former special agent with the Bureau of Alcohol, Tobacco, Firearms and Explosives (ATF), to lead the agency. A widely quoted expert on gun violence, Chipman in recent years has served as policy director for Giffords, the gun control organization founded by former Representative Gabrielle Giffords, who was wounded in a 2011 assassination attempt. If confirmed, Chipman would be the first permanent director of the agency in more than six years. Given the fraught nature of gun politics, only one ATF director has been confirmed by the U.S. Senate in the last 15 years, leaving the agency mostly run by a string of acting bosses. The president is set to formally announce the pick on Thursday when he unveils other steps he’s taking through executive action to address gun violence. He will be joined by Attorney General Merrick Garland, whose Justice Department will be tasked with taking some of its most aggressive steps on gun policy in more than a decade. How to watch President Biden’s remarks on gun violence What: President Biden announces executive actions aimed at curbing gun violence Date: Thursday, April 8, 2021 Time: 11:45 a.m. ET Location: White House Rose Garden Online stream: Live on CBSN in the player above and on your mobile or streaming device. The changes include reviewing federal policy surrounding ghost guns — handmade or self-assembled firearms that don’t include serial numbers — and the use of stabilizing braces on pistols, a modification that turns the weapon into a short-barreled rifle. Advocates for gun control are pushing the president to classify ghost guns as traditional firearms, a move that would require anyone who buys them to undergo a federal background check. On Thursday, Mr. Biden will give the Justice Department 30 days to issue potential changes in federal rules “to help stop the proliferation” of the weapons, according to the White House. Given the handmade nature of the weapons, ghost guns often cannot be traced by law enforcement because serial numbers are not required. The Justice Department is also being given 60 days to issue a proposed rule regarding stabilizing braces. Attaching such a brace to a pistol makes the firearm more stable and in essence transforms it into a short-barreled rifle subject to regulation by federal law. The White House noted that the alleged shooter in the March supermarket shooting in Boulder, Colorado, appears to have used a pistol with a brace. The Justice Department also will be asked to draft model legislation to enact “red flag” laws at the state level. For years, lawmakers in both parties have been pushing for federal and state legislation that would temporarily bar people facing mental anguish or other personal crises from accessing firearms if law enforcement or a judge determine they present a danger to themselves or others. To curb the uptick in homicides nationwide, the Biden administration is also asking five federal agencies to adapt more than two dozen government programs to help buoy community violence intervention programs nationwide. The White House noted that the president’s American Jobs Plan proposes spending $5 billion over eight years to support state and city-based violence intervention programs. The new plans earned swift support from national gun control organizations Wednesday night. John Feinblatt, president of Everytown for Gun Safety, said in a statement that the moves “will start to address the epidemic of gun violence that has raged throughout the pandemic, and begin to make good on President Biden’s promise to be the strongest gun safety president in history.” He added later that the decision to target ghost guns and “treat them like the deadly weapons they are will undoubtedly save countless lives – as will the critical funding provided to groups that focus on city gun violence.” Organizations pushing for stricter gun laws and Democratic lawmakers have been pushing for years for the federal government to reclassify ghost guns and force purchasers to undergo background checks. “Ghost guns are guns, too. And it’s time to close the loophole,” Democratic Congressman Adriano Espaillat, who’s pushed for legislation to regulate ghost guns, tweeted Wednesday. The NRA, meanwhile, immediately pushed back on the plans. The organization tweeted Wednesday night that the actions were “extreme” and wrote “the NRA is ready to fight.” “These actions could require law-abiding citizens to surrender lawful property, and push states to expand gun confiscation orders,” the NRA tweeted. Growing in popularity but difficult to track broadly given the lack of a serial number, ghost guns have been used in multiple shooting-related crimes in recent years. The Biden administration has been reluctant to publicly discuss gun control amid its initial focus on the COVID-19 pandemic and related economic downturn. During his first formal news conference last month, the president signaled he would not be rushed to address the issue despite recent mass shootings in Georgia and Colorado and that his administration would remain focused primarily on pushing legislative responses to the pandemic and his multi-trillion dollar infrastructure plan. His decision has allowed critics to highlight how Mr. Biden came up short on fulfilling a notable campaign pledge. Appearing in Nevada in February 2020, Mr. Biden vowed to send legislation to Congress on his first day in office that would repeal the liability protection for gun manufactures and closing loopholes in the federal gun background check system. For weeks, administration aides have said plans were still in the works — a posture that didn’t change in the wake of those recent shootings in Atlanta and Boulder, Colorado. Corey Rangel, Nancy Cordes, Kristin Brown and Fin Gomez contributed to this report.