An Elko man has pleaded guilty to buying 140 firearms for Mexican drug trafficking organizations, laundering the profits from those sales, and harboring undocumented workers at a Nevada mining company. Luis Alberto Osorio now faces a maximum sentence of 70 years in prison when he is sentenced on February 11, 2027.
Osorio pleaded guilty to one count each of firearms trafficking, straw purchasing of firearms, conspiracy to launder money, and harboring certain aliens, according to KLAS 8 News Now. Court records released by the federal government show the conspiracy ran from April 1, 2020, to September 17, 2025, according to the U.S. Department of Justice — a five-year run rather than a single isolated deal.
According to the outlet's report, Osorio conspired to purchase firearms, magazines, and ammunition for people affiliated with drug trafficking organizations operating in Mexico, then sold the weapons, magazines, and ammunition there for profit. He also laundered the proceeds from those gun sales, per the same account.
Military-Grade Weapons Moved South
The firearms involved were not standard hunting rifles. Among the weapons named in the case were the Barrett M82A1 and M107A1, both .50 BMG antimaterial rifles; the FN Herstal SCAR 17S, a 7.62x51mm rifle; the FN Herstal M249S, a 5.56x45mm firearm; and the Ohio Ordnance Works M2-SLR, a .50 BMG machine gun. Those specifications underscore why the case landed in federal court rather than a local one.
The straw purchasing and firearms trafficking counts were prosecuted under provisions of the federal Bipartisan Safer Communities Act of June 2022, which created standalone federal crimes carrying penalties of up to 15 to 25 years when linked to drug trafficking, according to the Center for American Progress. Congress passed those statutes, 18 U.S.C. §§ 932 and 933, specifically to give federal prosecutors direct tools against cartel gun supply chains.
Seventy Years, Four Counts
The Justice Department broke down how the counts stack up to create Osorio's maximum exposure: money laundering conspiracy under 18 U.S.C. § 1956 carries up to 20 years, while harboring undocumented aliens for commercial advantage under 8 U.S.C. § 1324 carries up to 10 years per alien. The mining-company harboring charge stems from Osorio employing undocumented workers at the Nevada facility, per KLAS.
Elko County sits at the center of Nevada's gold mining industry, which produces 79 percent of all U.S. gold and maintains heavy workforce demands across rural mining operations, according to High Country News. That labor demand helps explain the local backdrop against which the harboring charge unfolded.
Task Force Spanned Eight Agencies
The case was investigated by the Homeland Security Task Force, which included special agents from the FBI, HSI, DEA, ATF, IRS-CI, the Las Vegas Metropolitan Police Department, the U.S. Marshals Service, and the Nevada Gaming Commission, KLAS reported. The District of Nevada is prosecuting the case.
Federal firearms enforcement across Northern Nevada, where Elko is located, is managed by the ATF's San Francisco Field Division, which coordinates multi-agency task forces targeting illegal weapons pipelines, the Justice Department noted. The Drug Enforcement Administration's Los Angeles Field Division exercises federal oversight over Nevada as well, where officials note that Mexican drug cartels systematically pair narcotics distribution networks with high-powered illegal firearms acquisition.
Nevada Acting U.S. Attorney Sigal Chattah said firearms trafficking networks feed violent cartels that terrorize border communities and pump illicit drugs into neighborhoods. Chattah said cutting off the weapons supply chain directly disrupts the operational capabilities of dangerous criminal organizations. HSI Special Agent in Charge Jonathan Sherwin said trafficking military-style firearms and ammunition to Mexican drug trafficking organizations fuels violence and threatens communities on both sides of the border.
A Small Piece of a Massive Pipeline
Osorio's 140 trafficked weapons represent one node in a far larger cross-border flow. A federal audit by the U.S. Government Accountability Office found that 70 percent of firearms recovered by Mexican authorities and submitted for tracing between 2014 and 2018 originated in the United States, with high-caliber rifles the primary choice for cartels. More recent academic research from the University of San Diego estimates that between 85,000 and 135,000 firearms are trafficked illegally from the United States into Mexico each year, a volume researchers link statistically to rising homicide rates in Mexico.
Nevada itself has become a recognized source state in that pipeline. ATF tracing data analyzed by Everytown Research & Policy shows law enforcement recovered 5,904 crime guns in the state in 2023, with nearly 49 percent recovered within three years of their initial purchase — a short time-to-crime window considered a primary indicator of illegal trafficking networks.
The Osorio case follows a pattern local task forces have flagged before. Hoodline previously covered a federal case in which a multi-agency probe across California and Nevada, dubbed Operation Bear Trap, uncovered intersecting drug distribution and illegal firearms trafficking networks that resulted in a decade-long federal sentence. Federal officials continue to describe such joint task forces as central to disrupting combined weapons and narcotics pipelines across the region.
