Chad Goucher, 38, of Winthrop, pleaded guilty Monday in U.S. District Court to drug and gun charges that carry up to a total of 30 years in prison and more than $1 million in fines, according to a press release from U.S. Attorney Thomas E. Delahanty II.

After a search warrant was executed at Goucher’s Winthrop residence on March 6, 2015, officers recovered heroin, drug paraphernalia and three firearms, including a 12-gauge sawed-off shotgun. Goucher was charged with possessing heroin with the intent to distribute, possession of a firearm by a prohibited person and possession of an unregistered sawed-off shotgun.

Because of a prior felony conviction in the state of Maine, Goucher was prohibited from possessing firearms. According to the release, Goucher admitted to law enforcement that he intended to distribute some of the heroin, and he also said he knew he was not allowed to have guns.

He faces up to 20 years on the drug charge, a $1 million fine and between three years and life on supervised release. On the firearms charges, he could get up to 10 years in prison, up to three years of supervised release and a fine.

Goucher will be sentenced after the completion of a pre-sentence investigation report by the U.S. Probation Office. The Winthrop Police Department and the Bureau of Alcohol, Tobacco, Firearms and Explosives conducted the investigation.