PER CURIAM:
A jury convicted Jorge Molina-Sanchez of conspiracy to distribute and to possess with intent to distribute five kilograms or more of a mixture and substance containing a detectable amount of cocaine and one kilogram or more of a mixture and substance containing a detectable amount of heroin, in violation of 21 U.S.C. § 846 (2012) (Count 1); conspiracy to commit money laundering, in violation of 18 U.S.C. § 1956(h) (2012) (Count 2); possession with intent to distribute a mixture and substance containing a detectable amount of cocaine, in violation of 21 U.S.C. § 841(a)(1) (2012) (Count 3); and using firearms during and in relation to, and possessing firearms in furtherance of, drug trafficking crimes, in violation of 18 U.S.C. § 924(c)(1) (2012) (Count 4). On appeal, Molina-Sanchez raises several challenges to his convictions and 420-month, downward variant sentence. Finding no error, we affirm.
Molina-Sanchez first argues that the district court erred in denying his motions for judgment of acquittal on the drug trafficking and money laundering conspiracy offenses—Counts 1 and 2. We review de novo the district court's denial of a motion for judgment of acquittal.
To obtain a drug trafficking conspiracy conviction under 21 U.S.C. § 846, "the government must prove that (1) the defendant entered into an agreement with one or more persons to engage in conduct that violated 21 U.S.C. § 841(a)(1); (2) that the defendant had knowledge of the conspiracy; and (3) that the defendant knowingly and voluntarily participated in the conspiracy."
To obtain a money laundering conspiracy conviction under 18 U.S.C. § 1956(h), the government must prove:
Having thoroughly reviewed the trial transcript, we conclude that there was more than sufficient evidence (both direct and circumstantial) to convict Molina-Sanchez of both conspiracy offenses. Specifically, the evidence establishes that Molina-Sanchez knowingly participated in a large-scale drug trafficking operation and that he conspired to conduct financial transactions to both promote the drug trafficking operation and conceal the nature of the proceeds. Although Molina-Sanchez argues that the coconspirators who testified at his trial are inherently untrustworthy, "[i]n evaluating the sufficiency of the evidence, we do not review the credibility of the witnesses."
Next, Molina-Sanchez contends that the district court abused its discretion in admitting certain evidence. "We review a trial court's rulings on the admissibility of evidence for abuse of discretion, and we will only overturn an evidentiary ruling that is arbitrary and irrational."
We conclude that the district court did not abuse its discretion by admitting the challenged evidence, as it was relevant to the charges and not unduly prejudicial.
Molina-Sanchez argues that his sentence is procedurally and substantively unreasonable. We review a sentence for reasonableness under a deferential abuse of discretion standard.
Molina-Sanchez first raises several challenges to the district court's calculation of his advisory Sentencing Guidelines range. When evaluating Guidelines calculations, we review the district court's legal conclusions de novo and its factual findings for clear error.
Molina-Sanchez contends that he should not be held accountable for all of the drugs in the conspiracy because the evidence does not establish his involvement in the conspiracy. This argument fails for the same reason that his sufficiency argument fails: there was more than adequate evidence establishing Molina-Sanchez's participation in the large-scale drug trafficking operation.
Molina-Sanchez next asserts that the district court erred in applying the three-level enhancement for his role as a manager or supervisor in the conspiracy and in denying his request for a mitigating role reduction.
We discern no clear error in the district court's application of the three-level enhancement and its denial of a mitigating role reduction. The conspiracy involved more than five participants and the evidence presented a trial establishes that Molina-Sanchez was at least a manager or supervisor of the drug trafficking operation.
Molina-Sanchez next contends that the district court erred in applying the criminal-livelihood enhancement. The Guidelines provide for a two-level enhancement if the defendant received a leadership enhancement under USSG § 3B1.1 and "committed the offense as part of a pattern of criminal conduct engaged in as a livelihood." USSG § 2D1.1(b)(14)(E). ""Engaged in as a livelihood" means that, for any 12-month period, "the totality of circumstances shows that . . . criminal conduct was the defendant's primary occupation." USSG § 4B1.3 cmt. n.2 (internal quotation marks omitted);
We conclude that the district court did not clearly err in applying the criminal-livelihood enhancement. By 2009, Molina-Sanchez and his brother were receiving 11-kilogram shipments of cocaine every other month and each shipment yielded $80,000 in profit. Thus, even if Molina-Sanchez earned some money by other means, the primary source of his income for several years was the drug trafficking operation. Moreover, the court could have reasonably concluded that the lawn-mowing business was a front for the brothers' criminal conduct, considering that the lawn-mowing equipment was hardly used.
We also discern no clear error in the district court's denial of Molina-Sanchez's request for a two-level downward adjustment for acceptance of responsibility.
Finally, Molina-Sanchez challenges the substantive reasonableness of his sentence. "Any sentence that is within or below a properly calculated Guidelines range is presumptively [substantively] reasonable. Such a presumption can only be rebutted by showing that the sentence is unreasonable when measured against the 18 U.S.C. § 3553(a) factors."
We conclude that Molina-Sanchez has not met this burden. The district court carefully considered the § 3553(a) factors before imposing a sentence well below Molina-Sanchez's advisory Guidelines range of life plus 60 months' imprisonment. Indeed, the downward variance was generous considering that the court stated that this was one of the largest drug trafficking conspiracies it had ever witnessed. Moreover, the court considered Molina-Sanchez's arguments for a 180-month sentence but concluded that the seriousness of the offenses outweighed any mitigating factors. Finally, the court did not err in concluding that the difference between the postarrest conduct of Molina-Sanchez and his brother warranted a disparity in the their sentences.
We affirm the district court's judgment. We dispense with oral argument because the facts and legal contentions are adequately presented in the materials before this court and argument would not aid the decisional process.