
    UNITED STATES of America, Plaintiff-Appellee, v. Sylvester REID, Defendant-Appellant.
    No. 11-12726
    Non-Argument Calendar.
    United States Court of Appeals, Eleventh Circuit.
    Dec. 9, 2011.
    Dustin M. Davis, Wifredo A. Ferrer, U.S. Attorney, Lisa Tobin Rubio, Kathleen M. Salyer, Anne R. Schultz, U.S. Attorney’s Office, Miami, FL, for Plaintiff-Ap-pellee.
    Sylvester Reid, USP Beaumont-Inmate Mail, Beaumont, TX, pro se.
    Before BARKETT, HULL and ANDERSON, Circuit Judges.
   PER CURIAM:

Sylvester Reid, a federal prisoner proceeding pro se, appeals his total 610 months’ sentence imposed after the district court granted his 18 U.S.C. § 3582(c)(2) motion to reduce his sentences based on Amendment 599 to the Sentencing Guidelines.

After a 1996 jury trial, Reid was convicted of three counts of Hobbs Act robbery, in violation of 18 U.S.C. § 1951(a) (Counts One, Three and Five) and three counts of using a firearm during and in relation to the robberies, in violation of 18 U.S.C. § 924(c) (Counts Two, Four and Six). At sentencing, the district court, among other things, applied a five-level “specific offense characteristic” increase for Counts One, Three and Five (the robberies) because Reid had brandished a firearm. See U.S.S.G. § 2B3.1(b)(2)(C). The district court imposed concurrent 120-month sentences on Counts One, Three and Five; a mandatory consecutive 60-month sentence on Count Two; and mandatory consecutive 240-month sentences on Counts Four and Six, for an initial total 660-month sentence. Reid appealed his convictions, but not his sentences. This Court affirmed. See United States v. Reid, No. 98-4337, 1999 WL 680195 (11th Cir. Aug. 20, 1999) (unpublished).

On November 1, 2000, Amendment 599 amended the commentary to U.S.S.G. § 2K2.4, which provides the base offense level for a defendant who commits a § 924(c) offense. After Amendment 599, if the district court imposes a § 924(c) sentence “in conjunction with a sentence for the underlying offense” the court “do[es] not apply any specific offense characteristics for possession, brandishing, use, or discharge of an explosive or firearm when determining the sentence for the underlying offense.” U.S.S.G. app. C, amend. 599.

In 2008, Reid filed a pro se § 3582(c)(2) motion based on Amendment 599. Reid argued that under Amendment 599, his consecutive, twenty-year sentences on Counts Four and Six were improper because they were charged in a single indictment. The district court denied Reid’s § 3582(c)(2) motion. On appeal, this Court affirmed the district court as to Counts Two, Four and Six (the firearm counts) because Amendment 599 had no effect on those sentences. However, the Court vacated and remanded as to Counts One, Three and Five (the robbery counts) because application of Amendment 599 eliminated the “specific offense characteristic” enhancement of U.S.S.G. § 2B3.1(b)(2)(C), which resulted in a new guidelines range of 70 to 87 months’ imprisonment on those counts. See United States v. Reid, 364 Fed.Appx. 554 (11th Cir.2010). As noted earlier, the original sentence on these counts was 120 months concurrently.

On remand, Reid was represented by counsel and argued, inter alia, that the district court should resentence Reid to a single mandatory 60-month sentence on Counts One, Three and Five because they were charged in the same indictment and the sentences were imposed on the same day. The district court granted Reid’s § 3582(c)(2) motion and imposed three concurrent 70-month sentences, at the low end of the new, amended guidelines range, as to Counts One, Three and Five. The district court ran the three, new 70-month sentences concurrent to each other, but consecutive to the unchanged sentences for Counts Two, Four and Six, for a total of 610 months.

On appeal, Reid argues that: (1) his 1996 indictment was flawed because it did not identify with sufficient specificity under which subsection of § 924(c) he was charged; (2) Counts Four and Six should not have received consecutive, twenty-year sentences as “second or subsequent” convictions under § 924(c) because those offenses were charged in the same indictment as Count Two; and (3) remand is necessary because the district court failed to address these arguments when it granted his § 3582(c)(2) motion.

The problem for Reid is that his claims are outside the scope of his § 3582(c)(2) motion. Under § 3582(c)(2), the district court may reduce an incarcerated defendant’s term of imprisonment when the defendant has been sentenced pursuant to a guidelines range “that has subsequently been lowered by the Sentencing Commission.” 18 U.S.C. § 3582(c)(2). However, a § 3582(c)(2) proceeding “does not constitute a de novo resentencing” and “all original sentencing determinations remain unchanged with the sole exception of the guideline range that has been amended since the original sentencing.” United States v. Bravo, 203 F.3d 778, 781 (11th Cir.2000).

Here, only the sentences for Counts One, Three and Five received the “specific offense characteristic” enhancement eliminated by Amendment 599. As such, these were the only sentences the district court could modify. The district court lacked the authority under § 3582(c)(2) to consider Reid’s arguments regarding his indictment and his sentences for Counts Two, Four and Six. Accordingly, the district court properly limited its determination to whether to reduce Reid’s sentences on Counts One, Three and Five.

AFFIRMED. 
      
      . Reid also argued that, pursuant to Pepper v. United States, 562 U.S. -, 131 S.Ct. 1229, 179 L.Ed.2d 196 (2011), he was entitled to a full resentencing hearing, including consideration of his post-sentencing rehabilitation. Even construed liberally, Reid's pro se appellate brief does not raise this argument, and thus he has abandoned it. See Timson v. Sampson, 518 F.3d 870, 874 (11th Cir.2008) (explaining that, although we construe pro se pleadings liberally, "issues not briefed on appeal by a pro se litigant are deemed abandoned”).
     
      
      . We review de novo the district court’s legal conclusions regarding the scope of its authority under 18 U.S.C. § 3583(c)(2). United States v. Moore, 541 F.3d 1323, 1326 (11th Cir.2008).
     
      
      . Reid's arguments are also barred by the law of the case doctrine because he did not raise them in his direct appeal after his original sentencing. See United States v. Escobar-Urrego, 110 F.3d 1556, 1560 (11th Cir.1997).
     