Ramon Garcia-Pena (Garcia) pleaded guilty to conspiring to distribute and to possess with intent to distribute 500 grams or more of a mixture or substance containing methamphetamine, in violation of 21 U.S.C. § 841(a)(1) and (b)(1), and also pleaded guilty to forfeiture of certain property. The district court 1 granted the government’s motion to depart downward from the Guidelines for Garcia’s substantial assistance, and sentenced Garcia to 238 months imprisonment and 5 years supervised release.

On appeal, Garcia’s counsel has filed a brief and moved to withdraw under Anders v. California, 386 U.S. 738, 87 S.Ct. 1396,18 L.Ed.2d 493 (1967). For reversal, counsel suggests that the court abused its discretion in imposing an excessive sentence. This argument fails. At sentencing, Garcia withdrew his objections to the probation officer’s recommended sentencing enhancements, see United States v. Tulk, 171 F.3d 596, 600 (8th Cir. 1999), and the extent of the court’s downward departure is not reviewable, see United States v. Dutcher, 8 F.3d 11, 12 (8th Cir. 1993). Upon careful review of the record, we conclude there are no nonfrivolous issues for appeal. See Penson v. Ohio, 488 U.S. 75, 109 S.Ct. 346, 102 L.Ed.2d 300 (1988).

Accordingly, we affirm. We also grant counsel’s motion to withdraw.