OPINION

Roy Campbell appeals his conviction and 210 month sentence entered pursuant to his guilty plea to conspiracy to possess with intent to distribute in excess of fifty grams of cocaine base, in violation of 21 U.S.C.A. § 846 (West 1999 & Supp. 2001). At sentencing, the district court held Campbell had a total offense level of 31 and a criminal history of VI, subjecting Campbell to an incarceration period of 188 to 235 months; the court sentenced Campbell to 210 months incarceration, five years of supervised release, and a $100 special assessment.

Campbell timely appealed, raising four issues. First, Campbell alleges his plea agreement was involuntary because he was not sufficiently informed of the drug quantity for which he was liable. We review whether a plea agreement was entered voluntarily de novo. United States v. Da *75 mon, 191 F.3d 561, 564 n. 2 (4th Cir. 1999). Campbell was repeatedly informed of his liability for in excess of fifty grams of cocaine base, and acknowledged his liability for this quantity during his plea colloquy; consequently, this claim is meritless. United States v. DeFusco, 949 F.2d 114, 119 (4th Cir. 1991).

Second, Campbell alleges the district court erred in determining the drug quantity for which he was liable. We review a sentencing court’s findings regarding the quantity of controlled substance for clear error. United States v. D’Anjou, 16 F.3d 604, 614 (4th Cir. 1994). The Government established Campbell conspired to sell 2.5 ounces of cocaine base; consequently, this claim is meritless. United States v. Randall, 171 F.3d 195, 211 (4th Cir. 1999); United States v. Gilliam, 987 F.2d 1009, 1013 (4th Cir. 1993).

Third, Campbell asserts the district court erred in finding he possessed a firearm during the course of his drug offense. A district court’s determination as to whether a firearm was present and justifies enhancement is a factual determination reviewed for clear error. United States v. Apple, 915 F.2d 899, 914 (4th Cir. 1990). The Government established Campbell carried a firearm during the course of his drug offense; consequently, this claim is meritless. U.S. Sentencing Guidelines Manual § 2Dl.(b)(l) (2000); United States v. Harris, 128 F.3d 850, 852 (4th Cir. 1997).

Fourth, Campbell argues the district court erred in denying Campbell credit for acceptance of responsibility. The record reveals the district court credited Campbell’s offense level with a three point reduction for acceptance of responsibility; consequently, this claim is meritless. USSG § 3E1.1.

Accordingly, we affirm Campbell’s conviction and sentence. We dispense with oral argument because the facts and legal contentions are adequately presented in the materials before the court and argument would not significantly aid the decisional process.

AFFIRMED.