Martin Bryant Boyette, 35, and Julio Frentez Morales, 26, both of 1681 Keener Road in Clinton, pleaded guilty to being felons in possession of a firearm. They will be sentenced later and face up to 10 years in prison and a $250,000 fine.
Both men were injured on April 30 when Morales tried to throw a homemade bomb out the window of a minivan on U.S. Highway 701 as they drove past Hobbton Schools, authorities said.
The bomb went off in Morales' hand, seriously injuring him, and a piece of shrapnel hit Boyette in the back of the head, authorities said.
Investigators said Boyette and Morales planned to throw the bomb at a man dating Boyette's ex-girlfriend.