An Oak Grove, Missouri man was sentenced in federal court for his involvement in a fentanyl trafficking conspiracy and possession of machine gun conversion devices. Kal J. Nay, 22, received a three-year prison sentence without parole from U.S. District Judge Beth Phillips.
Nay’s co-defendant, Robert J. Turnage, also 22, had previously been sentenced on September 24, 2025, to four years in federal prison without parole for his participation in the same fentanyl trafficking conspiracy.
According to court records, Nay pleaded guilty on October 9, 2025, to charges of conspiracy to distribute fentanyl and possession of machine guns. The Jackson County Drug Task Force used a confidential informant between May and June 2024 to purchase “M30” pills containing fentanyl from both Nay and Turnage. Specifically, the informant bought ten pills from Nay on May 2; forty pills from him on May 23; and twenty pills from both defendants on June 11.
On June 18, authorities executed a search warrant at Nay’s residence in Oak Grove. During the search they found six machine gun conversion devices—known as “switches”—that had been produced using a 3D printer located at the home. Investigators reported that Nay admitted selling fentanyl pills and making the conversion devices with his printer.
Assistant U.S. Attorney Jessica Jennings prosecuted the case with investigative support from the Jackson County Drug Task Force and the Bureau of Alcohol, Tobacco, Firearms and Explosives.
The prosecution is part of Operation Take Back America—a national effort by the Department of Justice aimed at combating illegal immigration as well as eliminating cartels and transnational criminal organizations involved in violent crime.
The United States Attorney’s Office for the Western District of Missouri manages federal prosecutions across sixty-six counties in western Missouri—including areas stretching from the Iowa border south to Arkansas—and works with various law enforcement partners across Kansas City, Jefferson City and Springfield (official website). The office supports community outreach programs addressing issues like drug trafficking (official website) and is affiliated with the U.S. Department of Justice (official website).
