After Daniel Pena-Ramirez (Ramirez) pled guilty to drug conspiracy and weapon charges, the district court 1 imposed the mandatory minimum of 120 months on the drug conspiracy count, see 21 U.S.C. § 841(b)(1)(A), and the mandatory minimum of 7 years on the firearm count after concluding that Ramirez brandished the firearm during the underlying drug trafficking offense, see 18 U.S.C. § 924(c)(1)(A). On appeal, counsel moved to withdraw and filed a brief under Anders v. California, 386 U.S. 738, 87 S.Ct. 1396, 18 L.Ed.2d 493 (1967). Ramirez filed a pro se supplemental brief.

The arguments raised in the Anders brief fail. Counsel argues that Ramirez’s guilty plea was involuntary, but this claim is not cognizable here because Ramirez did not attempt to withdraw his guilty plea below. See United States v. Villareal-Amarillas, 454 F.3d 925, 932 (8th Cir. 2006). Next, we reject counsel’s argument that the government’s refusal to file a substantial-assistance departure motion violated due process: nothing in the record supports such an argument and Ramirez did not even attempt to compel the government to file a departure motion. Third, we reject counsel’s challenge to the district court’s finding that Ramirez brandished the handgun at issue, because the government provided evidence at sentencing that Ramirez displayed a handgun to an undercover officer to whom Ramirez was going to front methamphetamine to ensure that the officer would pay his drug debt. See 18 U.S.C. § 924(c)(4) (“brandish” means to display all or part of firearm in order to intimidate person).

*142 Finally, circuit precedent forecloses Ramirez’s argument that the plain language of section 924(c)(1) forbids the imposition of its mandatory minimum sentence when a defendant is subject to another larger mandatory minimum sentence. See United States v. Cisneros-Gutierrez, 598 F.3d 997, 1007 (8th Cir. 2010); United States v. Alaniz, 285 F.3d 386, 389 (8th Cir. 2000). 2

We reviewed the record independently under Penson v. Ohio, 488 U.S. 75, 109 S.Ct. 346, 102 L.Ed.2d 300 (1988), and found no nonfrivolous issues for appeal. Accordingly, we affirm the judgment of the district court. We grant counsel’s motion to withdraw, subject to counsel informing Ramirez about procedures for seeking rehearing or filing a petition for certiorari.