Both were arrested last March. Agents said they found several assault-type firearms concealed in roofing materials in the van Lopez-Gutierrez was attempting to drive into Mexico.
Avelar and Lopez-Gutierrez in September pleaded guilty to conspiracy to provide false statements during the purchase of firearms and conspiracy to smuggle goods from the U.S.
Avelar was sentenced to 37 months in prison, while Lopez-Gutierrez received a four-year term.
Both admitted participating in a scheme to buy firearms from licensed dealers in El Paso, then smuggle them into Mexico for sale.
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