Firearms; disallowing regulation of certain firearm suppressors. Effective date.

Oklahoma Senate Bill 124 prohibits the state from regulating firearm suppressors manufactured within Oklahoma. It defines "manufactured in Oklahoma" as using local materials and common parts (like screws or springs), requiring suppressors to display "Made in Oklahoma" markings. The bill explicitly states that locally made suppressors and their basic materials (e.g., unmachined steel) are not subject to federal regulation under U.S. commerce authority. Local governments cannot enforce rules that regulate suppressors beyond existing state law. The bill takes effect November 1, 2025.