President Biden on Monday announced rules to curtail the production of unlicensed “ghost guns” and nominated former federal prosecutor Steve Dettlebach to lead the Bureau of Alcohol, Tobacco, Firearms and Explosives as he renewed a push for gun restrictions.

One of the new regulations requires that so-called “buy build shoot” kits be produced by licensed gun manufacturers and include serial numbers. Commercial sellers of the kits must also receive a federal license and run background checks on buyers.

“These guns are weapons of choice for many criminals,” Biden said in the Rose Garden, holding up gun parts while condemning the homemade weapons. “We’re going to do everything we can to deprive them of that choice. And when we find them, put them in jail for a long, long time.”

Biden banning “Ghost Guns” – ATF director pick