Graham McDouglas Reams, Jr., pled guilty to possession of a firearm by a convicted felon, in violation of 18 U.S.C. § 922(g)(1) (2000). He was sentenced to seventy-four months in prison. He now appeals, arguing that his sentence violates the Sixth Amendment under United States v. Booker, 543 U.S. 220, 125 S.Ct. 738, 160 L.Ed.2d 621 (2005). We vacate the sentence and remand for resentencing.
Prior to Reams’ arraignment, the parties filed somewhat conflicting documents with the court. In Reams’ “Acceptance of Responsibility,” he admitted to being a convicted felon and to having a pistol with him when his vehicle was stopped on February 29, 2004. Reams stated that he made no other admissions regarding the offense. According to a “Factual Basis” filed by the United States, Reams was arrested following a traffic stop on February 29. The arresting officer detected a strong smell of marijuana in Reams’ vehicle and noticed a plastic sandwich bag inside the driver’s side door handle. The officer retrieved that bag and a second bag, each of which appeared to the officer to contain crack cocaine. Reams was arrested. Incident to the arrest, the officer recovered a handgun from Reams’ person. Reams indicated to officers that the bags should contain two and one-half grams of crack. Only attorneys for the Government signed the Factual Basis.
The court accepted Reams’ guilty plea. Because Reams possessed the firearm in connection with the commission of another offense, the probation officer applied the cross reference set forth at U.S. Sentencing Guidelines § 2K2.1(c)(1) (2003). The probation officer determined that the amount of crack constituting relevant conduct was six grams—the 2.5 grams referenced in the Factual Basis and another 3.5 grams discovered on Reams’ person during a March 29, 2004 traffic stop.1 The base offense level was 26, see USSG § 2D1.1(c)(7). Two levels were added because Reams possessed a firearm in connection with the offense, see USSG § 2D1.1(b)(1), for an adjusted offense level of 28. Three levels were subtracted for acceptance of responsibility, see USSG § 3E1.1(b). His total offense level was 25. Reams’ criminal history category was III. His guideline range therefore was 70-87 months. The court sentenced Reams to seventy-four months in prison.
Reams argues that his sentence violates the Sixth Amendment under United States v. Booker, 543 U.S. 220, 125 S.Ct. 738, 160 L.Ed.2d 621 (2005). He contends that the district court erroneously applied the cross reference based on the fact that he had possessed crack. Reams states that this *372fact was neither charged in the indictment nor admitted by him. The United States agrees that there was a Booker error and that we must vacate Reams’ sentence and remand for resentencing. Because Reams preserved this issue, our review is de novo. See United States v. Mackins, 315 F.3d 399, 405 (4th Cir.2003).
The transcript of the guilty plea proceeding has not been made part of the record on appeal. Assuming that Reams correctly states that he has never admitted possessing crack with the firearm, the cross reference should not have been applied. Without the enhancement, Reams’ adjusted offense level would have been 14, and his guideline range would have been 21-27 months in prison. Because his seventy-four-month sentence exceeds the maximum penalty authorized by the admitted facts, there was a Sixth Amendment violation requiring resentencing. See United States v. Evans, 416 F.3d 298, 300 (4th Cir.2005).2
We accordingly vacate the sentence and remand for resentencing. We dispense with oral argument because the facts and legal contentions are adequately presented in the materials before the court and argument would not aid the decisional process.
VACATED AND REMANDED