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Press Release

Weld County Man Pleads Guilty To Smuggling Gun Parts Out Of The United States And Possessing Unregistered Firearms

For Immediate Release
U.S. Attorney's Office, District of Colorado

DENVER – United States Attorney Jason R. Dunn today announced that Michael John Suppes, age 46, of Weld County, Colorado, pleaded guilty earlier this week to smuggling gun parts out of the United States and possessing unregistered firearms.  Homeland Security Investigations (HSI) joined in this announcement. 

According to the stipulated facts contained in the Suppes’ plea agreement, Suppes, who was not a licensed firearm dealer or manufacturer, willfully engaged in the business of manufacturing and dealing in firearms.  He exported firearm parts to buyers in other countries without obtaining an export license.  Furthermore, he possessed short-barreled rifles that were not registered under the National Firearms Registration and Transfer Record as required by law.

Suppes operated a business, MJS Performance LLC, that sold firearm parts and motorcycle muffler parts.  Between January 25, 2015, and November 5, 2018, he, through his business, shipped over 1,200 domestic and international packages.  The defendant came to the attention of Homeland Security Investigations (HSI) after it learned of multiple packages that contained concealed gun parts destined for other countries, including Saudi Arabia, India, and Cambodia.  The gun parts required an export license, which Suppes did not obtain.

Between December 2018 and April 2019, Suppes communicated with individuals who said they wanted to smuggle firearms into Mexico.  In April 2019, he agreed to sell one of the individuals 30 AR-15 and 20 AK-47 rifles as well as magazines and ammunition.  Suppes was arrested on his way to meet with the individual; he had the 50 rifles, magazines, and ammunition with him.  Most of the firearms were short-barreled rifles.

Suppes also agreed to a substantial forfeiture of assets that totaled nearly $300,000.  He also agreed to forfeit 123 firearms as well as firearm parts and ammunition.

He faces not more than 10 years in federal prison, followed by up to 3 years on supervised release.  He also faces up to a $250,000 fine. 

Suppes was prosecuted by Assistant U.S. Attorney Emily Treaster.  Assistant U.S. Attorney Tonya Andrews handled the asset forfeiture portion of this prosecution.  This case was investigated by Homeland Security Investigations (HSI), with assistance from the United States Postal Inspection Service (USPIS), the Weld County Sheriff’s Office, and the Colorado State Patrol (CSP).

This case is part of Project Guardian, the Department of Justice’s signature initiative to reduce gun violence and enforce federal firearms laws. Initiated by the Attorney General in the fall of 2019, Project Guardian draws upon the Department’s past successful programs to reduce gun violence; enhances coordination of federal, state, local, and tribal authorities in investigating and prosecuting gun crimes; and ensures that federal resources are directed at the criminals posing the greatest threat to our communities.

A copy of this press release is located on the website of the U.S. Attorney’s Office for the District of Colorado.  Related court documents can be found on PACER by searching for Case Number 19-cr-291.

The year 2020 marks the 150th anniversary of the Department of Justice.  Learn more about the history of our agency at


Jeff Dorschner
Spokesman, Public Affairs Officer
U.S. Attorney's Office, District of Colorado
303-454-0243 direct; 303-489-2047 cell

Updated July 1, 2020

Project Guardian
Project Safe Neighborhoods
Press Release Number: Case Number 19-cr-291