Two men from Oklahoma City have admitted guilt to firearms charges in separate cases, which were prosecuted as part of a collaboration between the City of Oklahoma City and the U.S. Attorney’s Office for the Western District of Oklahoma. This partnership aims to enhance efforts against violent crime in the city.
On March 4, 2025, Davy Eugene King, aged 52, was charged by a federal Grand Jury with illegal firearm possession following a previous felony conviction. King confessed on April 19, 2025, that he had a firearm despite his past convictions. His criminal record includes multiple felony convictions in Oklahoma County District Court such as second-degree murder and other offenses related to stolen vehicles and domestic abuse. King could face up to 15 years in federal prison along with a potential fine of $250,000 at sentencing.
Separately, Robert Dewayne Mayfield, aged 23, was indicted by another federal Grand Jury on February 20, 2025. He faced charges for unlawfully possessing a machine gun after modifying a firearm with a machinegun conversion device (MCD). These devices transform semi-automatic weapons into fully automatic ones and are prohibited under federal law. Mayfield also pled guilty on April 19, 2025. He may receive up to ten years in federal prison and incur fines reaching $250,000.
The investigations were conducted by the Oklahoma City Police Department alongside the Bureau of Alcohol, Tobacco, Firearms and Explosives. Special Assistant U.S. Attorney Laney Ellis is prosecuting these cases; Ellis’s position is supported by a Project Safe Neighborhoods grant awarded to bolster efforts against violent crime.
U.S. Attorney Robert J. Troester stated that “this collaboration with Oklahoma City will strengthen public safety.” Troester highlighted the strengthened partnership with local police through an additional prosecutor dedicated to holding violent offenders accountable under federal law.
Oklahoma City Police Chief Ron Bacy remarked that “these prosecutions demonstrate the power of our partnership with the U.S. Attorney’s Office,” emphasizing their shared commitment to addressing gun crimes within the community.
These cases form part of initiatives named “Shots Fired” and “Project Switch Off,” under Operation Take Back America—a nationwide effort by the Department of Justice targeting illegal immigration and transnational criminal organizations while safeguarding communities from violent crime perpetrators.
Reference is made to public filings for further details.

